LOL garlic is good for you, most vegetables are. But if you eat too much of it, nobody will let you get close enough to transmit anything contagious to you. It is even said to repel fleas and lice. If that strong it might also repel lovers and friends, too.

It's enough to eat 2-3 cloves per day, and you can reduce the risk of some diseases. Don't eat too much, it may be harmful.

I'm not sure I understand garlic's reputation as an antimicrobial, considering its high tendency to rot.