I have noticed in the last few months I have a diminished sense of smell. In particular, we were looking at a house to buy and my husband and agent couldn t go in the house because of the cat urine smell. We have gone to the house for the third time and I don t smell the cat urine. Then tonight taking a walk, we went by an area that my husband and son smelled like a dead animal. I couldn t smell it. I am 60, healthy, take no medications, have not had a cold or virus.