<s>[INST] I have a smelly tooth when i floss. The dentist says some bone loss causing space for bacteria to grow. I have been very ill for 6 weeks now and have been diagnosed with a polyp in my sinus adjacent to the tooth. What came first the polyp or the smelly bone loss tooth? Which caused which? [/INST] Thanks for your query, I have gone through your query.The bad breath or halitosis can be because of the gum infection or pus discharge secondary to the deposits between the teeth or below the gums.Consult a oral physician and get your teeth cleaned and use mouth washes after that and maintain oral hygiene after that.The halitosis can also comes from sinus polyp also. But first get your teeth cleaned and later you get the sinus problem solved.I hope my answer will help you, take care. </s>