Thank you. Once upon a time about 29 years ago I sniffed cocaine almost every day for four months. Today I found out as a result of a tooth ailment that I had large sinus cavities and my sinuses were low into my roots or I should say close to the roots of my teeth . Is it possible that 4 months of doing cocaine 29 years ago could have eaten up my sinus cavities? I didn t do an excessive amount at all but I did do it almost every day for 4 months. I never did it before nor have I ever done it since.