Until yesterday, I never knew it was possible to loose one's sense of smell (a fact gleaned from the wonderful, highly recommended A Natural History of the Senses). I think I now have losingsmellophobia (that's not the technical term, of course, but I was unable to locate the true term in this nearly comprehensive phobia list). I did find:
Bromidrosiphobia – fear of body smells
Olfactophobia – fear of smells
Osmophobia – fear of smells or odors
And my new favorite phobia: onomatophobia – fear of hearing a certain word or of names. What a terrible phobia from which to suffer! Imagine walking around all day in terror, covering your ears, lest you hear someone utter the word kumquat.