If you swallow a lot of air from activities like eating quickly, it may lead to excess gas. Eating certain foods or having food intolerances can cause gas due to trouble digesting. You may feel gassy ...

Eating high-fiber foods like beans and cabbage can make your farts smell bad. Food intolerances, such as lactose intolerance, can cause smelly farts. Constipation can lead to farts that smell bad.