<< onions.
broccoli.
tons of garlic.
basically anything that can get stuck in your teeth and gives you bad breath. >>
Actually, Garlic and onions give you bad breath because the odor gets 'vented' out through your lungs, much like alcohol. Also, the odor comes up through the esophagus from your stomach... even if you don't burp. If you do burp, it's flatly unbearable. And finally, both odors are released in your body oils and sweat. This is why you stink like garlic or onions even if you brush your teeth.