Flatulence
Don't worry, CAT 1 It's quite natural. As cabin crew we can get around it quite easily, namely by "crop-dusting" which merely involves strutting through the economy cabins very briskly and relying on the engine noise and general steerage stink to cover up for you.
Of course, being confined to a small box can be a little trickier, so may I suggest that you keep those lovely crew sandwiches 'til the last minute and then blame it on the egg roll? You could always make out that you're on to your 4th wifey, hang up the tie, roll down the shirt; thus exposing loads of chest hair and liberally dose the F/D with copious amounts of Paco Raban???!!~!@
Good Luck!!
WC!