Can You Get High From Incense? The Science Explained

Ordinary commercial incense sticks and cones will not produce a recreational high. The fragrant smoke from sandalwood, nag champa, or lavender incense lacks the concentration of psychoactive compounds needed to significantly alter consciousness. That said, the question is more interesting than a flat “no” because several traditional incense resins contain biologically active molecules that do reach the brain, and some of them have measurable effects on mood, anxiety, and even pain perception in laboratory studies. The real picture involves a sliding scale from subtle neurochemical nudges to genuinely dangerous synthetic products sold under the label “incense” that are nothing of the sort.

What Frankincense Resin Actually Does to the Brain

Frankincense, the dried resin of Boswellia trees, has been burned in religious ceremonies for thousands of years. Worshippers and meditators have long reported that it promotes a calm, contemplative state. For a long time, this was written off as placebo or simple association with peaceful settings. But a widely cited study found something more concrete: a compound in Boswellia resin called incensole acetate is a potent activator of TRPV3 channels in the brain. In mice, it produced measurable anti-anxiety and antidepressant-like behavior, and those effects disappeared in mice bred without TRPV3 channels, strongly suggesting the compound was acting through that specific pathway.¹

TRPV3 channels are normally associated with sensing warmth on the skin, but they are also present in the brain. When incensole acetate binds to them, it appears to alter emotional processing in a way the researchers described as genuinely psychoactive. This does not mean you’ll feel “stoned” from burning a cone of frankincense on your desk. The concentration of incensole acetate delivered through ambient smoke inhalation is far lower than what was administered in the mouse study. But the finding does confirm that at least one traditional incense resin contains a molecule with real pharmacological activity in the central nervous system, not just a pleasant smell.

Agarwood, Copal, and Other Resins With Brain Activity

Frankincense is not the only resin with documented neurological effects. Agarwood (also called oud), one of the most expensive natural fragrance materials in the world, produces an essential oil whose vapors have been studied for their effects on the brain’s calming system. Mouse studies found that agarwood essential oil vapors promoted sedation and sleep by enhancing the activity of GABA receptors, the same receptor family targeted by drugs like benzodiazepines and alcohol.² A separate study on inhaled agarwood vapors found effects on both GABA and glutamate signaling, with the oil appearing to reduce anxiety-like and depressive-like behavior in animal models by adjusting the balance between these two neurotransmitter systems.³

Copal resin, burned for centuries in Maya ceremonies, has a similar story. When researchers tested copal incense smoke on animals, it significantly reduced anxiety-like behavior. Interestingly, that effect was blocked both by a GABA receptor antagonist and by an endocannabinoid receptor antagonist, meaning copal’s calming effect appears to work through two separate pathways at once. The identified triterpene compounds in copal also inhibited an enzyme involved in breaking down endocannabinoids, which in theory could boost your body’s own cannabis-like signaling.⁴

These findings are worth knowing, but they come with a heavy caveat. Almost all of this work is in mice or in cell cultures, with controlled doses that don’t translate straightforwardly to someone sitting in a room with a lit incense stick. The leap from “this compound affects neurons in a dish” to “burning this resin in your living room will change your brain state” is enormous. What the research does establish is that the ancient intuition about certain resins promoting altered mental states was not entirely without a biochemical basis.

How Fragrance Compounds Reach Your Brain

When you inhale incense smoke, you are breathing in a complex cocktail of particles and volatile organic compounds. The fragrant molecules that give incense its character are mostly terpenes, the same broad family of chemicals responsible for the smell of pine forests, citrus peels, and cannabis. Your olfactory system is the fastest route from the outside world to the brain’s emotional centers. Smell signals travel from receptors in the nose to areas including the amygdala and hippocampus, regions that govern emotion and memory, without the multi-step relay most other senses require.⁵

But there is a distinction between a molecule affecting you because it smells calming and a molecule affecting you because it is pharmacologically active after crossing into brain tissue. Most of what happens when you smell incense falls into the first category: you perceive a pleasant or familiar scent, that perception triggers emotional associations, and your nervous system responds with subtle shifts in mood or arousal. Studies on specific terpenes common in incense, such as linalool and pinene, suggest they may also have more direct pharmacological effects. A review of the evidence on these two compounds concluded they influence multiple neurotransmitter and inflammatory pathways and show psychoactive properties, though not intoxicating ones.⁶ That distinction matters. “Psychoactive but not intoxicating” captures the effect of regular incense well: your brain registers something, but you are not impaired.

Cedrol, a compound found in cedarwood and several traditional incense blends, provides a concrete example. When human subjects inhaled cedrol, their heart rate, blood pressure, and respiratory rate all dropped compared to breathing plain air, while the balance of their autonomic nervous system shifted toward the parasympathetic (“rest and digest”) side.⁷ A follow-up study in subjects who had undergone total laryngectomy, meaning the fragrance bypassed the nose entirely and entered the lungs directly, found that cedrol still lowered blood pressure and shifted the nervous system toward relaxation, suggesting the effect was not purely about smelling something pleasant.⁸ The compound appeared to be acting on the body after absorption, not just through the olfactory sense. Still, the effect is a gentle physiological shift toward relaxation, not a high.

Synthetic Cannabinoid “Incense” Is a Completely Different Problem

If you search online for getting high from incense, you will quickly run into discussions of products sold under names like K2, Spice, or various herbal blends marketed as “potpourri” or “herbal incense.” These products have almost nothing in common with the frankincense, sandalwood, or nag champa sticks in your local shop. They are dried plant material sprayed with synthetic cannabinoids, lab-created chemicals designed to bind to the same brain receptors as THC.

The critical difference is potency and mechanism. THC in natural cannabis is what pharmacologists call a partial agonist at cannabinoid receptors, meaning it activates them, but with a ceiling effect. Synthetic cannabinoids found in Spice products are full agonists with much higher potency and efficacy.⁹ That is what makes them both powerfully psychoactive and dangerously unpredictable. Users report intense euphoria, hallucinations, severe anxiety, and psychotic episodes. Emergency-room visits from synthetic cannabinoid products have included seizures, kidney damage, and cardiac events.¹⁰

These products were first flagged by European drug-monitoring agencies around 2008, and since then governments have engaged in a cat-and-mouse game with manufacturers. Every time a specific synthetic cannabinoid gets banned, producers swap in a newer, untested compound. The resulting products have wildly inconsistent dosing, because the chemicals are dissolved in solvent and sprayed onto plant material with no quality control. A single bag can have hot spots with many times the intended concentration next to areas with almost none. If someone tells you they “got high from incense,” there is a good chance they are talking about one of these synthetic products, not about traditional incense of any kind.

Ancient Traditions Knew What They Were Doing

The use of psychoactive plant smoke in ritual settings goes back to the earliest evidence of human fire mastery. A review of ethnobotanical and archaeological evidence describes how cultures worldwide, from the tent ceremonies of nomadic tribes to the small meditation rooms of Taoist practitioners, deliberately burned specific plants and resins to produce altered states of consciousness for shamanic journeying, divination, and healing.¹¹

What distinguishes these traditional practices from casually burning a grocery-store incense stick is intentionality and ingredient selection. Ancient practitioners were not randomly choosing fragrant woods. They were selecting specific plants known through generations of experimentation to produce desired mental states, sometimes powerfully psychoactive ones. Salvia divinorum, for instance, a plant in the mint family used by Mazatec shamans of Mexico, contains salvinorin A, one of the most potent naturally occurring hallucinogens known. When inhaled, its effects peak within about two minutes and fade within roughly twenty minutes, producing experiences that rate highly on scales measuring mystical-type and hallucinogenic effects.¹² That is genuinely getting high, and it comes from a botanical that has been burned as a kind of incense in its cultural context.

The point is that the line between “incense” and “psychoactive smoke” was never clear-cut historically. What made it clear-cut in modern consumer culture is that the incense sold at shops and online is formulated for fragrance, not pharmacological effect. The bioactive compounds are present only in trace amounts, diluted by binders, charcoal, and fragrance oils. If you deliberately sought out pure Boswellia resin, copal chunks, or wild-harvested agarwood and burned them in a small, enclosed space, you would likely notice more of a mood effect than from a mass-market stick. Whether that would cross the threshold from “mildly relaxing” to “high” depends heavily on individual sensitivity, concentration of smoke, and the specific material.

The Health Risks of Trying to Push the Effect

If the research on frankincense and agarwood makes you curious to burn more incense in pursuit of a noticeable mood shift, the health costs quickly outweigh any subtle benefit. Incense smoke is not just fragrant vapor. It is a combustion product containing particulate matter, carbon monoxide, nitrogen dioxide, volatile organic compounds like benzene and toluene, and polycyclic aromatic hydrocarbons, which are carcinogenic. On average, burning incense produces particulate matter at more than four times the rate of cigarette smoke per gram of material burned.¹³

Research on heavy incense burning in temples found that chronic exposure to the resulting air pollution promotes lung cancer risk through accumulation of carcinogenic compounds in the deepest portions of the lungs.¹⁴ The toxicity comes directly from the harmful constituents of the smoke and from the ability of ultra-fine particles to deposit deep in lung tissue.¹⁵ Burning incense in a small, poorly ventilated room to try to concentrate the psychoactive terpenes would simultaneously concentrate all of these harmful combustion products.

Ventilation matters enormously for any kind of indoor smoke exposure. Research on secondhand cannabis smoke, a useful parallel because it also involves terpene-rich plant combustion, found that in an unventilated room, non-smokers exposed to secondhand smoke showed detectable cannabinoid levels in blood and urine, mild sedation, and impaired cognitive performance. In a ventilated room, those effects essentially disappeared.¹⁶ The same principle applies to incense: a stuffy room will expose you to more of everything in the smoke, both the pleasant compounds and the harmful ones.

Long-Term Incense Use and Cognitive Health

Beyond cancer risk and respiratory problems, there is emerging evidence that chronic incense burning may affect the brain directly, and not in a good way. A study of older adults in the community found that indoor incense burning was associated with worse scores on cognitive testing, with the negative impact being significantly greater in people who also had diabetes, high cholesterol, or existing white-matter changes in the brain.¹⁷ The particulate matter and volatile organic compounds in incense smoke promote chronic low-grade inflammation, and the brain is particularly sensitive to that kind of ongoing insult, especially in people already dealing with vascular risk factors.

This is worth knowing because in many cultural contexts, daily incense burning is not a passing habit but a lifelong practice. The cognitive findings do not mean that lighting incense once in a while will damage your thinking. They suggest that years of daily, heavy exposure in enclosed spaces carries a cumulative cost, particularly for people whose brains are already under metabolic stress. If you enjoy incense, keeping the space ventilated and limiting how much you burn are practical steps that reduce exposure to the harmful components while still letting you enjoy the fragrance.

What About Salvia and Other Botanical “Incenses” Sold for Effect

A gray zone exists between traditional incense and synthetic drug products. Certain botanicals are sold online as “incense” or “herbal blends” with a wink, clearly intended to be smoked for their psychoactive properties. Salvia divinorum is the most prominent example. It is legal in many jurisdictions precisely because it is not a classical drug of abuse, but inhaling its active compound produces rapid, intense, and sometimes disorienting hallucinogenic experiences. In controlled studies, subjects reported effects peaking within two minutes and resolving in roughly twenty, with dose-related increases in mystical-type experiences. Physically, salvinorin A did not significantly raise heart rate or blood pressure, making it unusual among potent psychoactives.¹²

Other botanicals sometimes sold under the incense umbrella include mugwort, blue lotus, and various Artemisia species. The evidence base for most of these is thin compared to the compounds discussed above, consisting mostly of traditional-use reports rather than controlled studies. If a product is being marketed as incense but the seller emphasizes “effects” or “experience” in the description, you are almost certainly being sold something intended for inhalation rather than ambient fragrance, whether it contains a botanical psychoactive, a synthetic cannabinoid, or some combination of both. Treating these products as equivalent to a sandalwood stick from a gift shop is a mistake that can range from mildly disorienting to medically dangerous, depending on what is actually in the blend.

Why the Placebo and Associative Effects Are Real Enough

After sorting through the pharmacology, it is worth acknowledging that the most common “high” people report from regular incense is probably not pharmacological at all, and that does not make it fake. The smell of incense is tightly linked to context: meditation spaces, temples, yoga studios, quiet evenings. Your brain learns to associate that smell with relaxation, introspection, or spiritual practice. When you light the same incense at home, the olfactory cue triggers the associated mental state, sometimes powerfully. Olfactory stimulation has been shown to alter cognition, mood, and even measurable brain activity on EEG, regardless of whether the fragrance molecule is doing anything pharmacologically significant once it enters the bloodstream.

This conditioned-response effect is probably what accounts for most of the subjective experiences people describe when they say incense “does something” to them. It is a real neurological phenomenon with measurable downstream effects on heart rate, cortisol levels, and self-reported mood. Calling it placebo undersells it. Your brain is genuinely shifting gears in response to a sensory cue, just not because of a drug-like mechanism. For many people, that associative relaxation is the entire point of burning incense, and it works without any need to increase the dose or sit in a cloud of smoke to chase a stronger effect.