Yes I seem to remember having some ollifactory (sp) distortion druing withdrawal at times, that is smelling things that weren't there. Also snorting itself is an addiction. I've heard of a couple other dope snorters here that mostly snorted oxy like you that went over to sub and took the sub up the nose. I don't think they were very successfull in their treatment. I hope you do better.
I am no doctor, but i am an addict quitting cold turkey at the same time as you. I am almost certain that your sense of smell will come back over the next couple of weeks, months, and depending on how much usage years. I got my info from a college study group lecture on cocaine about 4 years ago. Even severe usage sufferers eventually got all of there sense of smell back. It is a combo of physical damage and mental changes.
Good luck with everything! Tomorrow is day 1 for me cold turkey after almost 2 years of 120mg hydro every day. We will go through this together so please continue posting bc your posts will help me.