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smell, sense that enables an organism to perceive and distinguish the odors of various substances, also known as olfaction. In humans, the organ of smell is situated in the mucous membrane of the upper portion of the nasal cavity near the septum. It is made up of the olfactory cells, which are actually nerve cells that function as receptors for the sense of smell. The free ends of the cells project outward from the epithelial tissue in the form of numerous hairlike processes. These fibers are buried in the mucus that coats the inner surface of the nasal cavity and are stimulated by various odors. Nerve fibers extend from the olfactory cells to an area of the brain called the olfactory bulb. Any disturbance of the nasal cavity—such as the common cold—in which the olfactory hairs are covered with excess mucus or other material, interferes with the sense of smell. Most physiologists agree that although a substance must be volatile to be sniffed by the nose, it must subsequently be dissolved in the mucous lining of the nasal cavity to be smelled. It is also believed that there are only a few basic odors (perhaps about seven), and that all other odors are a combination of these. Attempts at classifying the so-called primary sensations of smell have not yet been successful. The sense of smell is not as strongly developed in humans as in many other vertebrates, particularly carnivores which employ olfactory organs to locate food and detect dangerous predators. To many invertebrates (especially insects) as well, smell is a highly developed sensory mechanism, necessary in obtaining food, in finding mating partners, and in recognizing other animals.
What does it mean when you dream about a smell?
Experiences from the past play a part in distinguishing what a smell in a dream means to the dreamer. Sometimes we remember people by the odors we identify them with, like grandpa’s pipe tobacco. In this example, the significance of the dream would depend on what grandpa meant to the dreamer.
To perceive by olfaction.
that sense (olfaction) by which scents or odours are perceived
At times you may experience the sense of smell in your dreams. The smell could be environmental. If there is a strong smell in your sleeping environment, you may perceive it and incorporate it into your dream. Otherwise, the smell in your dreams is triggered by a memory. You may be associating your dream experience with a pleasant or unpleasant order. For example, if you are dreaming about your mother, you may smell the aroma of a food she once cooked. The smell may trigger emotions and reflect the general quality of the experience in your dream.
References in periodicals archive
The women were asked to be the "smellers
" because they tend to have a better sense of smell than men.
Then the samples are mailed overnight to groups of trained smellers
. These experts use their noses to judge the strength of smells.
Then he categorised animals into what were basically called the smellers
(most mammals) and the non-smellers (including humans).
101) "The result of an act of smelling is thus spatial: smellers
subsequently move toward or away from the odor, as well as relational: smellers
are not just interested in the subjective experience of the odor, but are in some manner concerned with the source of that odor."
Really good smellers
could have detected way more than 1 trillion odor mixtures, the scientists said.
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