Hi. I have this nasty smell on my left back tooth. Whenever i rub it, it releases this strong stenge. I know there is a whole on my tooth and sometimes i get annoyed and pick it with a safety pin and it bleeds. I dont know what is going on! Even when i put my tongue on that tooth, i can kinda taste it. I have tried flossing and brushing but nothing works... sometimes i cough up these little balls that smell exactly like the stenge of my tooth. Are these two things related?!Is there anything i can do at home to stop it?! Your answer would be greatly appreciated!