What are the gassy foods that I should avoid for gastric problem?

I have a problem that at times when I over eat I tend to have excessive gas that is stored inside my body which makes it impossible for me to do any other thing and always is making me restless. The more I walk the gas releases but leaves a very bad and smelly odor for people who are standing around me. Then my wife told me that if I really want to get rid of this gas problem of mine then I should stop taking any kinds of gassy foods. What are the gassy foods that I should be avoiding then?