it's methane which is the smell
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What makes farts stink?
The odor of farts comes from small amounts of hydrogen sulfide gas and mercaptans in
the mixture. These compounds contain sulfur. Nitrogen-rich compounds such
as skatole and indole also add to the stench of farts. The more sulfur-rich
your diet, the more sulfides and mercaptans will be produced by the bacteria
in your guts, and the more your farts will stink. Foods such as cauliflower,
eggs and meat are notorious for producing smelly farts, whereas beans produce
large amounts of not particularly stinky farts.
Why do farts make noise?
The soundsare produced by vibrations of the anal opening. Sounds depend on the velocity
of expulsion of the gas and the tightness of the sphincter muscles of the
anus. Contrary to a popular misconception, fart noise is not generated
by the flapping of the butt cheeks
So the real question. Do you like to fart?
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