07/01/2014 08:53 GMT | Updated 23/01/2014 10:53 GMT

Revealed: Why We Fart More On Aeroplanes (VIDEO)

There's nothing worse than a mile-high guff, when you're trapped in a seat, unable to move. But before you berate your fellow passenger, take heed: they can't help being more gassy in the air.

So, how does altitude affect your digestive system?