Difficulty smelling

I recently saw a Korean movie.  A man tried hard to smell anything, but in vain. He kept sniffing, hoping to smell anything.  Smell disorder can arise from many causes.  He seemed to smell something long after he became unemployed.  His smell disorder might come from work stress.  

Huh lm, Korean doctor in the 1600s, recommends applying moxibustion at the following acupuncture points for difficulty smelling

DU 22  신회 

BL 10  천주 

DU 26  수구