Controversy Surrounds the Use of Zinc-Containing Nasal Sprays as a Cold

Controversy surrounds the use of zinc-containing nasal sprays as a cold remedy, since they have been associated with anosmia (loss of smell) .If true, this is likely due to the sprays damaging which tissue?

A) central nervous system
B) osmic nerve
C) peripheral nervous system
D) neuroglial system