Every wonder what causes farts to smell? Here, we explain everything there is to know about letting one rip.

First and probably the scariest of the "dangerous things that can happen when you hold in your farts" is anything but pretty. According to What If, inadvertent holding-in of farts from some sort of blockage can actually cause the gas to buildup and expand your intestines like an over-inflated balloon animal until – pop! – they burst.

It is normal to pass flatus ("to fart"), though volume and frequency vary greatly among individuals. It is also normal for intestinal gas to have a feculent or unpleasant odor, which may be intense. The noise commonly associated with flatulence is produced by the anus and buttocks, which act together in a manner similar to that of an embouchure.

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Farts are your body’s way of releasing gas that builds up due to swallowed air, the digestive process, and other factors. Flatulence, also known as farting, is something everyone experiences.