When we swallow food, liquid or saliva, we can also trap air. This air collects in the digestive system and as your gut tries to get rid of the gas, we pass wind. It’s a normal biological process of every human body and on average, we pass wind between 5 and 15 times per day and often we’re not even aware it’s happened. However, excessive flatulence can be an uncomfortable, embarrassing experience and a very smelly problem!