The word of the day is anosmia:

modern Latin, < Greek ἀν priv. + ὀσμή smell.(Show More)

Pathol.

Loss of the sense of smell.  (OED)


[Some proteins, mutations in which are linked to a certain kind of disease,] are also expressed in the nose, and mutations in them can cause anosmia.

 - a seminar I went to

(I'm being deliberately vague here because the seminar was on unpublished work, and I would hate to be responsible for someone getting scooped on account of my blog.)