Why do I have a weird smell in my left nostril 7 months after rhinoplasty/septoplasty

7 months ago i got a rhinoplasty/septoplasty. About a month after my surgery i noticed a bad smell but only in my left nostril. I figured it was due to me just having surgery. I am still having that strange smell. I have gone to my surgeon and they looked inside with a camera, and no infection. They also had me do a CT scan for sinitis, that came back clear also. I have no answers and the smell is terrible.