What the fumes are saying:
Did you know that a lot of cases of bad breath do not originate in the mouth? One commmon source is the sinuses. Inflammation of your nasal passages can be caused by allergies or a chronic infection, and can breed bad breath in two ways. First, a stuffy nose forces you to inhale and exhale through your mouth. This dries up saliva that would otherwise kill bacteria, the source of most bad breath. Second, post-nasal drip is a potent producer of dragon breath. Mucus flows down the back of your nose and onto the back of your tongue. This accumulating slime feeds bacteria, which in turn breed volatile sulfer compounds, the chemicals that create foul oral odor.
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