If your breath smells, it might be your tongue, not your teeth. 90% of chronic bad breath is caused by bacteria on the back of the tongue, not between teeth. These microbes release sulfur gases that smell like rotten eggs. Brushing alone won’t fix it. What to do: + Use a tongue scraper daily + Rinse with a zinc-based mouthwash + Avoid dry mouth + Skip alcohol-based rinses + Get dental cleanings 2x a year