A distinctly different "bad breath." Help identify? I have on rare occasion met people who had a most foul breath. I don't know how to describe it, but the odor was very similar, even exact, among every one of them. I can't personally tolerate it. This is the only kind of bad breath that smells so similar. No other bad breath is so similar across the board like this one. I get the impression that it's an infection, that they are aware of it and would like to do something about it. Does anyone have any idea what I'm talking about?