Olfactory sensations awake vague and half-understood perceptions, which are accompanied by very strong emotion.
"Studies in the Psychology of Sex, Volume 4 (of 6)" by Havelock Ellis
It gives the olfactories a new sensation.
"The Atlantic Monthly, Volume 20, No. 117, July, 1867." by Various
Spirits sometimes have power to produce in the olfactory nerves of many persons, precisely the sensations which many familiar odors produce.
"Witchcraft of New England Explained by Modern Spiritualism" by Allen Putnam