I just found what I've been looking for over the last month: a page with experiences of nasal polypectomies.
But according to one of the posters, it can take up to a year to recover the sense of smell! I sincerely hope not! ... Maybe he had lost it previously... Mine had only somewhat diminished... Guess I may have to ask about this next week. I can still only smell something if I put it right over my nose.