Unfortunately (or, perhaps, fortunately!), you can't smell your own bad breath. Even if you cup your hand over your mouth and nose, and take a sniff right after you breath out, you're really only smelling your own hand, not your breath. That's because, despite the fact that bad breath contains all kinds of nasty stuff that would make you wretch if it came from someone else, the problem usually develops so slowly and so gradually that you simply become used to the smell from yourself. Your body becomes so acclimatized to the specific concentrations of nasty stuff in your bad breath, that you simply don't notice it anymore! Read more... http://garysigafoos.blogspot.com/2012/12/5-quick-easy-bad-breath-tests-you-can_7.html