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Why does fart stinks?

Before we begin this smelly discussion, let me define fart.  A fart (also known as flatulence, passing gas, breaking wind, anal burp, arse blast, belch from behind and other nasty names) is a combination of gases such as nitrogen, carbon dioxide, oxygen, methane, and hydrogen sulfide, that travels from a person's stomach to their anus.

These gases usually come from the air we swallow, gas seeping into our intestines from our blood, gas produced by chemical reactions in our guts, and gas produced by bacteria living in our intestines.

The way for this excess gas to exit the body is through the anus, or you can burp and taste it too! Nasty!

The gas that makes your farts stink is the 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.

This gas contains sulfur which causes farts to have a smelly odor. 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 evil-smelling farts.  Beans, although known to produce large amounts of gas, does not particularly leads to malodorous farts.

Fun facts about farts:
A healthy person farts 16 times a day.
Many animals fart too. Cats, dogs, and cows. Elephants fart the most.
Humans fart the most in their sleep.
Farts that contain a large amount of methane & hydrogen can be flammable.


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