Queefing is the sound made when trapped air is released from the vaginal canal. It sounds similar to passing gas, but it has nothing to do with digestion. The air that comes out is simply regular air that got pushed inside during movement, sex, or exercise. It’s extremely common, completely normal, and not a sign of a health problem.
How Queefing Happens
The vaginal canal is a muscular, flexible tube. When something enters it or when the body shifts into certain positions, air can slip inside. That air has nowhere to go but back out, and when it does, the walls of the vaginal canal vibrate slightly, producing the characteristic sound.
Unlike rectal gas, queefing doesn’t involve any digestive process. The air being released is just ordinary room air, which means it typically has no odor at all. This is one of the clearest differences between a queef and flatulence: there’s no bacterial breakdown of food involved, so there’s no smell.
Common Causes
Sexual activity is the most well-known trigger. When a penis, finger, or sex toy moves in and out of the vagina, it acts like a piston, pushing air deeper into the canal with each thrust. When the object is withdrawn, that air escapes. Certain positions that angle the pelvis upward tend to trap more air, making queefing more likely during or after sex.
Inserting or removing a tampon or menstrual cup can do the same thing. The product pushes a small pocket of air inward, which may release later when the product is removed or when you shift positions.
Exercise is another frequent cause, particularly yoga and Pilates. Inverted poses like downward dog, bridge, and shoulder stands open the vaginal canal slightly, allowing air to enter. When you transition to another pose and engage your core, that air gets pushed out. Running and other high-impact movement can produce the same effect as the body stretches and contracts through a range of motion.
Queefing vs. Passing Gas
Because the sound is so similar, many people assume queefing and flatulence are related. They aren’t. Flatulence is produced by bacteria in the intestines breaking down food, which generates gases like methane and hydrogen sulfide (the source of the smell). Queefing is purely mechanical: air goes in, air comes out. No bacteria, no digestion, no odor.
If vaginal gas consistently has a foul smell, that’s a different situation. Foul-smelling gas or discharge from the vagina can be a sign of a rectovaginal fistula, which is an abnormal connection between the rectum and the vaginal canal. The most common symptom of this condition is passing gas or stool from the vagina. Fistulas can develop after childbirth, surgery, or inflammatory bowel disease. This is rare, but it’s worth knowing the distinction: normal queefing has no smell.
Pelvic Floor Strength and Frequency
Weaker pelvic floor muscles can make queefing happen more often. The pelvic floor is the group of muscles that supports the bladder, uterus, and rectum, and also helps control the opening and closing of the vaginal canal. When these muscles lose tone, whether from childbirth, aging, or general deconditioning, the vaginal canal may not stay as firmly closed during movement, making it easier for air to slip in.
Strengthening the pelvic floor through Kegel exercises can help reduce the frequency. The basic technique involves squeezing the same muscles you’d use to stop the flow of urine, holding for about five seconds, then relaxing for five seconds. Working up to 10 repetitions per set, three sets per day, is a common target. You can do them lying down, sitting, or standing. Starting while lying down is often easier if the muscles are weak.
For people who have trouble isolating the right muscles, biofeedback training with a physical therapist can help. During a session, a small probe provides feedback on whether you’re engaging the correct muscles, which makes it easier to practice effectively on your own afterward.
Can You Prevent It?
You can reduce how often queefing happens, but you can’t eliminate it entirely, and there’s no medical reason to try. During sex, slowing down the pace of thrusting or avoiding full withdrawal between strokes limits the amount of air pushed inside. Positions where the pelvis is more level rather than elevated tend to trap less air.
During yoga or Pilates, queefing is so common that most instructors won’t bat an eye. If it bothers you, engaging your pelvic floor muscles before transitioning out of an inverted pose can help keep air from escaping suddenly. Over time, building pelvic floor strength through regular Kegel practice makes a noticeable difference in how often it occurs during both exercise and sex.
The most important thing to understand about queefing is that it’s a normal, involuntary bodily function. It happens to virtually everyone with a vagina at some point, and it carries no health consequences on its own.