I don't know what this is or have no clue at all. I brush my teeth everyday, even the tongue, and top of gum. But when i swallow and breath back out through nose or mouth it gives off a bad smell. I won't be able to smell it, but other people around me will smell it. Not only that i have another problem with smelling or bad odor. When i'm sitting down for a while like 15min and longer my back smells, thigh smells, and butt smells or gives off a bad odor which i can smell and other can too. I try fragrance which doesn't help at all. I take three bath a day, with body soap which doesn't help at all either. Any advice will help Thanks.