Nerves that help your sense of smell are examples of olfactory nerves.
Origin of olfactory
- Latin olfactōrius used to sniff at from olfactus past participle of olfacere to smell olēre to smell facere to do fact
From American Heritage Dictionary of the English Language, 5th Edition
- Latin olfactorius, from olfactus, present participle of olfaciÅ (“I sniff"), from oleÅ + faciÅ.