I eat raw
garlic for its anti-fungal properties sometimes. It cleared up a bad dose of tonsillitis before and its helped me with other unpleasant things too. It's pretty damn difficult eat it raw though.
Just lay off it for a few days before and you should be fine, most people tolerate a few cloves a day no problem. Just don't do the dog on it and eat like 20 cloves in the one day.