passed gas is nothing to rant over, really. it happens more often than not & dissipates before any real ill effect takes place.
what's worse is when someone pukes on a plane. such was my trip to vegas...someone in the front of the plane had some mexican food for lunch during the layover in phoenix & then puked it all back up on the descent to vegas. then we sat there on the tarmack for a good 30 minutes for no apparant reason but to smell this person's upchucked lunch. it was nasty & there was definitely no dissipation action going on!