Could you explain why does it stink between my teeth?

Do you floss: Regularly? If you don't you could have debris between your teeth (and cavities too). Your gums may not be as healthy either.

Possible causes: Possible causes may include food debris trapped between the teeth, as well as a possible periodontal problem or decay in a tooth. An evaluation with your dentist or dental hygienist could provide you with a more definitive answer and solution to resolve the problem.