I thought the same as GGA that this may be about flatulence.
Years ago i had an op that removed quite a lot of my intestines. The outcome of which is that I usually fart heaps when i fly on trips longer than about 2hrs. So i have to change what i eat etc etc on the day before i fly. I fly a lot. I pity anyone sitting near me.
PS. Dont live in the Coast of WA. Its windy from about 1pm most days in Summer.
