These compounds are the actual odor emitting particles that you smell as bad breath,” she said. And while it may seem like ...

Medically reviewed by Jane Kim, MD A sinus infection, or sinusitis, is inflammation of the cavities around your nasal passages. Symptoms of a viral or bacterial sinus infection include congestion, ...

Believe it or not, respiratory infections, sinus infections, and postnasal drip can all lead to bad breath, says Dr. Reck. "When you have a cold or postnasal drip, you get what we refer to as phlegm ...