Odoriferous substances, such as essential oils, throw off molecules which are detected by the olfactory cells in the upper part of the nose.

Although they have tended to experiment with synthetic perfumes and other odoriferous substances apart from essential oils, their findings are very interesting from an aromatherapy viewpoint.

Bowman's glands are serous glands in the lamina propria, whose secretions trap and dissolve odoriferous substances.

Rabbits signal when they are ready to copulate by marking inanimate objects while giving off odoriferous substances though their chin gland, a process known as "chinning".

James Strong writes "the Syriac etymology of the word, namely, to run in drops, exude, distil, would lead to the idea of a resinous and odoriferous substance of the vegetable kingdom."

I opened my kit, which I had inadvertently set down into another suspiciously odoriferous substance, and began rummaging in it with one hand for something that might relieve the pain of her congestion during her last few hours.

Since the UK hunting ban, hunts are using a mixture of an odoriferous substance with an oil in order to improve the persistence of the scent trail, and then to lay the scent about 20 minutes in advance of the hunt.

Long before leaving Europe for Canada, I had been puzzled by this canine habit of rolling in odoriferous substances, and although I had searched the literature and asked a number of mammalogists for an explanation, none had been forthcoming.