Everyone has gas, also referred to as burping, belching, flatulence, flatus, and of course passing gas. You can pass gas through your mouth, which is the belching, and burping that we do or you can pass it through your rectum, which is the flatulence, flatus or passing gas.

Gas comes from two sources: the air that we swallow when we eat, drink or breathe through our mouth and the breakdown of undigested food by the bacteria that is in our large intestine. There are certain foods that may cause more gas to form during the digestion process than other foods. Foods that cause gas in one person may not produce gas in another person.