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Farting

Farting is a normal bodily function and is a slang word for the more polite ‘flatulence’. Farts or flatulence are the expulsion of the gas, from your bottom (or anus). Luckily for all of us there are sensors in you rectum (just above your anus in your intestine) which allow you to tell the difference as to whether you are going fart or do an actual poo. The sound of a fart is due to your anus vibrating as the gas comes out and the ‘pitch’ of this sound depends on the tightness of your anal ring.

What goes into a fart?

Most of a fart is not actually smelly and can be made up of several different gases including:

  • Nitrogen: 20–90%
  • Hydrogen: 0–50%
  • Carbon dioxide: 10–30%
  • Oxygen: 0–10%
  • Methane: 0–10%

The smelly part of a fart can be due to a gas called hydrogen sulfide (rotten egg smell).

What food that you eat are particularly likely to cause a fart?

Those foods include beans, lentils, onions, garlic, leeks, turnips, radishes, potatoes, cashews, Jerusalem artichokes, oats, wheat, broccoli, cabbage, brussel sprouts