WOW, mine cleared today and I can breath clear down to my toes now. Based on the intensity, I think it had something to do with quitting the cigs. I remember, clear back when I was in college (1972), the dentist telling me i had impacted sinus's or something like that. It showed up on the dental xrays. So, apparently they have now cleared. If that dentist is still alive and practicing, I could have him add this information to my records. haha!