Treatments: 1) Beano (digestive enzymes, but really just for beans) 2) Bromelain (aka pineapple) 3) Lactaid 4) Digestive enzymes (like Beano, but covers more bases)

Coverups: 1) Improved ventilation 2) French-style perfumed handkerchiefs 3) Lots of incense (which ironically, is processed, perfumed cow xxxx)

Alternately, broccoli works pretty well in the offense department, too :)