Coughing while vaping is a common experience, particularly for those new to e-cigarettes. This reflex is the body’s natural response to irritation in the throat and airways, caused by the vapor, the hardware settings, or the inhalation method. By adjusting your inhalation technique, device configuration, and e-liquid composition, you can significantly reduce or eliminate the coughing reflex and achieve a smoother experience.
Adjusting Inhalation Technique
The physical act of drawing vapor into the lungs is often the primary cause of coughing, especially when transitioning from traditional smoking. The method of inhalation must be matched to the device being used, utilizing either Mouth-to-Lung (MTL) or Direct-to-Lung (DTL) techniques.
The Mouth-to-Lung style involves drawing the vapor into the mouth first, then inhaling it into the lungs, much like sipping from a straw. This technique works best with devices that have a tighter airflow and higher nicotine concentrations, mimicking the draw resistance of a conventional cigarette. Taking slow, gentle draws prevents an overwhelming rush of vapor that can trigger a cough reflex.
The Direct-to-Lung technique requires a faster, deeper breath taken straight into the lungs. This method is reserved for higher-power devices and low-nicotine liquids, which produce a much larger volume of vapor. Using the wrong technique for the device often results in immediate irritation and coughing.
Optimizing Device Settings
Beyond the user’s technique, the device offers several adjustable variables that influence vapor harshness. The power setting, typically measured in wattage, controls the heat of the coil and the rate of vaporization. Using a wattage that is too high causes the liquid to heat too quickly, leading to hot, harsh vapor that irritates the airways. Lowering the wattage or temperature setting produces a cooler vapor, which is gentler on the throat and lungs. Increasing the airflow allows more cool air to mix with the vapor, reducing density and heat, making the inhale smoother.
Coil maintenance is also a mechanical consideration that can prevent coughing. A coil that is burnt, dry, or not properly “primed” (saturated with e-liquid before first use) will heat the wick material instead of the liquid, producing an acrid taste known as a “dry hit.” A dry hit is intensely harsh and is an immediate cause of coughing, so ensuring the coil is fresh and fully saturated is important.
Understanding E-Liquid Ingredients
The chemical composition of the e-liquid is a frequent source of throat irritation and coughing. E-liquids are primarily composed of Propylene Glycol (PG) and Vegetable Glycerin (VG). PG is thinner and is the main irritant for many users, though it carries the “throat hit” sensation.
If coughing persists, switch to an e-liquid with a higher VG ratio, such as 70VG/30PG or 80VG/20PG. VG is thicker and produces a smoother, denser vapor that is significantly less irritating to the throat than a high-PG blend.
Nicotine concentration and type also play a large role in harshness. Freebase nicotine becomes increasingly harsh at higher concentrations, especially in high-power devices. Switching to nicotine salts, which are formulated with benzoic acid to lower the pH, offers a smoother experience even at high nicotine levels. Certain flavorings, such as intense menthol, cinnamon, or citrus notes, can also cause a reaction in sensitive individuals, suggesting a change in flavor profile may be necessary.
Managing Physiological Sensitivity
The body’s natural sensitivity to inhaled substances contributes to the coughing reflex. Vaping, particularly the use of Propylene Glycol, is hygroscopic, meaning it draws moisture from the throat and mouth. This effect leads to dryness and irritation, making the throat more susceptible to coughing.
Maintaining hydration by drinking plenty of water can counteract this dehydrating effect and keep respiratory tissues moist. When first switching from combustible tobacco, some initial coughing is a common physiological adjustment as the respiratory system adapts to the vapor. This adjustment period can last a few days or weeks. If coughing is accompanied by other severe symptoms, consulting a healthcare professional is appropriate.