I had sinus surgery for a chronic infection in my left sinus. They also did septum correction. My post-op checks went great and I had no problems healing. However, I now have an awful smell that I can't get away from. The surgery was 4 weeks ago and this smell started this past week. I also have intense sinus type headaches. Advil helps with the pressure pain but I've been taking it pretty much non-stop for the past week. Is all of this normal?