Why people have gas?

Answer 1

This really depends on which type of gas your are referring to: cooking gas, anesthetic, or farting.

Cooking gas, such as propane, is used in cooking appliances such as stoves and BBQ's. The gas acts as fuel for the fire responsible for cooking your food.

Anesthetic gas is used primarily to knock somebody unconscious. It is most commonly used right before a patient undergoes a surgery. These gases include but are not limited to: Lidocaine, Sevoflurane, and Propofol.

You fart every day. The thing is, most of the time, it's odorless. Smelly gas is made when you eat something containing sulfur, such as garlic, onions, leeks, broccoli, cauliflower, cabbage or brussels sprouts. Other times, gas is caused by Oligosaccharides, a sugar that our body cannot digest until the particles get down to the small intestine. Once it reaches the small intestines, bacteria break down the sugar. The bacteria produces gas, which is put out through a fart.