That bad breath odor from garlic is from your stomach. Brushing your teeth or using mouthwash isn't going to help (much). You'll have it for about 2 days until the garlic is digested from your system. Garlic smell will also come out your pores if you've eaten enough of it. Drinking lemon, cheese, or mint might help to cover up the smell. Meanwhile, don't do much kissing! You can find more .