I'd figure out what is causing them. If you are eating too many "beans," for example, Beano will help that or if you have a lactose sensitivity and are eating too much cheese or dairy, then a lactase pill will help, etc. You're not supposed to be farting
that much 
Find and correct the problem.
Gas producing veggies: broccoli, cauliflower, cabbage, onions, green peppers
This article:
http://www.uptodate.com/patients/con...=digestiv/7452 says your posture is bad