Can Excessive Nasal Spray Usage Cause Olfactory Loss And Crusty Spots In Nostrils?

Can anything be done to get rid of crusty spots in my nostrils ? They are not sore and do not bleed, but they won't go away. My ENT doctor gave me Mupirocin ointment,, and I used it nightly for weeks on end finally giving up as it did nothing. My complaint with him was that had lost my sense of smell a couple of years ago. I cannot smell good or bad odors. After I had a nasal X-ray, he told me that my sinus passages were clear, and no infection. I have used over many years a OTC Nasal spray, and wondered if that has damaged my sense of smell ? I I live alone and have to triple check myself to make sure the gas jets on my stove are off. The Dr. said it would come back, but it is now 6 months later and still not a thing !Sue Cadman