Have you ever considered the range of "wind breakings"
A Fluff......Silent but deadly.
A puff.......only just audible
A pip........audible but very short duration.
A trump......the average passing of wind.
A pump.......a forced passing of wind.
A fart.......one that all can hear.
A ripper.....long lasting, sounds like tearing material(can be mistaken for trouser seams splitting)....(IF YOU'RE LUCKY)
A blaster....speaks for itself.
There is also the "Duck fart" which comes out in phases as you walk along or as you come downstairs.
Any more for any more????
Best wishes.