I have had bad sinus odor and pain for over two years now. I have had 3 ct scans and a mri and it only shows polyps with minor thickening of the left sinus. They told me based on the results i don't have sinusitis. By the way i already had a endoscopy wich also came back neg. I cant seem to get rid of this odor and sinus pain. If i rub my finger accross my nose and smell it, it stinks really bad almost like mildew. My dr prescribed flonase but before i take that again since it dries me out i want to try nasalcrom. I don't beleive i have allergies but i will try anything at this point.