nose blind

adjective2

1. •
   Lacking the sense of smell.

   • They had no trouble fleeing, and seemed adequate in their care and preparations, but gods, they made a racket and left a trail a noseblind hound could follow. — 2013
2. •
   Unable to detect particular odours and smells, usually due to familiarity with or prolonged exposure to them.

   • Gradually, the salty smell abated, or perhaps they had just become nose-blind to it. — 2015