We’ve all been there — an unexpected sound or a sudden smell that makes us blush and maybe blame someone else. But farts, or flatulence in more scientific terms, are actually a fascinating and completely normal part of being human. Behind this everyday (and sometimes awkward) occurrence lies a world of surprising facts most people know nothing about.
In this article, we dive into some of the most unexpected and eye-opening truths about passing gas — from why it smells the way it does to what’s happening in your body when it forms. Get ready to be both entertained and amazed by what you don’t know about this ordinary yet oddly mysterious bodily phenomenon!
1 This is how much you fart every day…
On average, you let out enough gas to fill a 700-milliliter balloon every single day. That means an adult farts somewhere between 13 and 21 times in a 24-hour period.
No joke — wear it like a badge of honor! [source]
2 Yes — you can actually measure your farts…
Can a toot be measured? Absolutely — if you have the right tools. With the help of an anal catheter (yep, right up the golden exit) and a special measuring tube, it’s possible to record the exact volume of gas released every time you need to let off a little pressure.
We’ve obviously all been waiting for this breakthrough. [source]
3 It’s no myth — women’s farts really do smell worse than men’s…
For years, men have claimed that women’s farts smell worse — and now they can finally pat each other on the back. Because science says they were right (at least according to one study).
Researchers fed 16 healthy volunteers a mix of pinto beans and a laxative, then collected every toot through a “flatus collection system” — essentially a tube attached to a gas-permeable bag. Once collected, the gas samples were analyzed using gas chromatography–mass spectrometry to identify their chemical makeup.
Two poor judges then had to do a blind smell test (we salute their sacrifice). On a scale from 0 to 8 — where 8 meant “extremely offensive” — the descriptions included “rotten eggs“, “decaying vegetables“, and even “sweet“.
The verdict? Women’s farts contained significantly higher levels of hydrogen sulfide and smelled stronger, while men tended to produce higher overall volume. [source]
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4 How fast a fart travels — and why some blasts sound louder…
A fart travels at roughly three meters per second, which is faster than most people want to imagine. A tight sphincter muscle can also make farts sound louder — when the muscle is tense, the gas exits faster and more forcefully, creating a sharper (and funnier) noise. A looser muscle, on the other hand, lets the gas slip out more quietly and smoothly, with less resistance. [source]
5 Adolf Hitler was infamous for his bad gas…
Adolf Hitler was known for producing some truly terrible smells — and there was a medical reason for it. His chronic hepatitis and severe stomach cramps played a major role in the foul odors he released. On top of that, he reportedly took 28 different medications every single day, which certainly didn’t help his digestive system.
Of course, it’s unlikely that any of his officers dared complain, no matter how bad the stench was. [source]
6 Farting — a whole new way to say hello…
The Yanomami tribe in the Amazon rainforest has a rather unique greeting: they welcome each other by passing gas. Yes — farting is their version of a handshake.
Which raises an important question: is it considered rude if you can’t let one rip when meeting your mother-in-law? [source]
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7 Some creatures actually like the stink…
Dogs are often fascinated by smells that we humans find disgusting — including farts. With their super-sensitive noses, they’re naturally curious about any new scent, especially those linked to other animals or the humans they live with.
So when a dog sticks its nose between your legs or cheeks after you let one slip, it’s simply gathering intel. For dogs, sniffing out odd scents is totally normal — it’s how they explore the world and learn what’s happening around them. [source]
8 Yes — in theory, you could build a nuclear bomb from farts…
How many farts would it take to match the power of a nuclear weapon? Well, science has looked into it — because of course it has. One study suggests that if you fart nonstop for six years and nine months, you’d release enough gas to equal the energy of an atomic bomb.
Another claim says that if every person on Earth let out nine farts in a row, the combined gas would reach the same explosive force.
There you have it — vital knowledge for humanity. [source]
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9 Smelling someone else’s fart isn’t dangerous — it might even be healthy…
According to researchers at Exeter University in England, breathing in tiny amounts of another person’s gas may actually benefit your health. Studies suggest it could help protect against strokes, dementia, cancer and heart attacks.
No matter how hard I try to explain this to my wife, she still doesn’t believe me.
But hey — at this rate, she’ll never get sick. [source]
10 Deep underwater, it’s pretty much a fart-free zone…
Letting one loose ten meters below the surface is nearly impossible due to the increased pressure. At that depth, the surrounding force rises to about two atmospheres, compressing the gas inside your body and shrinking its volume.
With the gas squeezed tight, it becomes far harder for it to escape and spread, meaning underwater farts are rare — if not downright impossible. [source]
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5 Common Questions About Farts
Gas forms when we digest food, especially fiber and carbs. Some is swallowed air, and some is made by gut bacteria, which help break down food.
Most gas is odorless — the smell comes from tiny amounts of sulfur compounds created during digestion. Foods like beans, eggs and cabbage increase these.
Anywhere from 10 to 25 releases per day is completely normal. Some people pass more, depending on diet, stress, and how fast their digestion works.
Often yes — quiet releases tend to contain more sulfur gases, while the loud ones are mostly just air rushing out quickly.
Sometimes — holding gas can cause pain, bloating and pressure. Eventually, your body will get rid of it one way or another, usually through a burp or—well—you know.
