Yet despite the prominence of the olfactory sense in late nineteenth-century writing, no full-length study has examined perfume in the literature of the period until now.

Bees also are thought to rely on their olfactory sense to help locate the food source once the foragers are given directions from the dances.

Rodents have a sensitive olfactory sense which has been used by humans to detect odors or chemicals of interest.

Such a direct limbic connection makes the olfactory sense unique.

The head bears four tentacles; the upper two are larger and bear eye-like light sensors, and the lower two are tactile and olfactory sense organs.