I was about to correct my answer and did some research
Olfaction, or the sense of smell, is the special sense through which smells are perceived. It occurs when an odor binds to a receptor within the nasal cavity, transmitting a signal through the olfactory system. Olfaction has many functions, including detecting hazards, and pheromones, and plays a role in taste. Wikipedia
You are correct about olfaction. Optic nerve impressions are projected to the posterior occipital area of the cranium. The ladies at med school told me my tongue was so long that I could even lick my EOP!!!