beano works, but you have to figure out what makes you gassy. for me, i think breathing gives me gas. one of my friends called yesterday and asked me if i was responsible for the smell in nyc the other day!
seriously, soy, onions, broccoli, and dairy. for dairy there is always lactaid tablets.
there is a book, "the gas we pass". by the same author as "everyone poops". its part of life, but it is also fun to walk away....
suri