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The sense of smell, or olfaction, [nb 1] is the special sense through which smells (or odors) are perceived. [2] The sense of smell has many functions, including detecting desirable foods, hazards, and pheromones, and plays a role in taste.
Retronasal smell creates flavor from smell molecules in foods or drinks shunting up through the nasal passages as one is chewing. When people use the term "smell", they are usually referring to "orthonasal smell", or the perception of smell molecules that enter directly through the nose and up the nasal passages.
The olfactory bulb transmits smell information from the nose to the brain, and is thus necessary for a proper sense of smell. As a neural circuit, the glomerular layer receives direct input from afferent nerves, made up of the axons from approximately ten million olfactory receptor neurons in the olfactory mucosa, a region of the nasal cavity.
Age is the strongest reason for olfactory decline in healthy adults, having even greater impact than does cigarette smoking. Age-related changes in smell function often go unnoticed and smell ability is rarely tested clinically unlike hearing and vision. 2% of people under 65 years of age have chronic smelling problems.
6. Fish Sauce. A few drops of fish sauce can elevate your stir-fries, soups, and sauces with deep, savory, salty complexity.Just don't sniff the bottle. Ever. It smells like an old fish market ...
Alcohol. Whether or not you like the taste of alcohol, there’s still a world of difference between the smell and the flavor. Some liquors are outstanding and match up to the taste, yes, but for ...
“And when there is a pleasant smell, the brain tells the nose to increase the amount of air inhaled. It’s not something that’s done consciously, but instead, the brain is hardwired to do it ...
The role of smell has long been viewed as secondary to the importance of auditory, tactile, and visual senses. [23] Humans do not rely on olfaction for survival to the same extent as other species. Instead, smell plays a heavier role in aesthetic food perception and gathering information on the surroundings. [1]