Swallowing air usually happens when a person eats too fast or drinks to fast.
Or you can also swallow air when you talk too fast, chew gum, suck on hard candies, drink carbonated beverages, or smoke.
Or for example when you're a baby and are bottle fed then you can swallow air when you drink the bottle too fast and the milk goes down in the bottle so you get more air than milk.
That then leads to air in the babies stomach which causes gas that needs to be burped away.
Swallowing air is known as Aerophagia.
Aerophagia is the medical term for excessive and repetitive air swallowing. We all ingest some air when we talk, eat, or laugh.
People with aerophagia gulp.
Aerophagia is a condition of excessive air swallowing, which goes to the stomach.
Aerophagia may also refer to an unusual condition where the primary symptom is excessive flatus, belching is not present, and the actual mechanism by which air enters the gut is obscure.