 here. Passing gas in the company of others is not only taboo, it can be deadly. I'm gagging. Passing gas releases a plume of toxic vapors like ammonia and hydrogen cyanide. Oh, you're killing us over here. Daddy, you promised you'd smoke outside. You're right, pumpkin. Excuse me. If you smoke, take it outside. Don't pass gas. A message from the American Legacy Foundation and the Ad Council. Get the facts at don'tpassgas.org.