Why do some people "fart" more than others?

Mostly it's the foods that people eat. Some foods just cause more gas to build up!

I think it's just the fact that everyone's body chemistry is different. Some foods affect some people differently than others, and unfortunately sometimes the side effect is gas. It's just simple biology and it happens to all animals, not just humans. My chihuahua has the worst gas when I feed him certain dog foods.