Garlic supplements you buy at the drugstore is not going to smell. I use it when I do not need to swallow the whole garlic clove (so it gets to the intestine and keeps acting there).
I know I smell too, but like you said, the benefit is worth much more.
Now, how is it real garlic smells and not the supplements. I do not know the supplement might use allicin and get rid of some other smelly nutrients?