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"Smell", from Allegory of the Senses by Jan Brueghel the Elder, Museo del Prado. An odor (American English) or odour (Commonwealth English; see spelling differences) is a smell or a scent caused by one or more volatilized chemical compounds generally found in low concentrations that humans and many animals can perceive via their olfactory system.
Identifiers. MeSH. D012903. Anatomical terminology. [edit on Wikidata] 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.
Olfactory system. The olfactory system, or sense of smell, is the sensory system used for olfaction (i.e., smelling). Olfaction is one of the special senses directly associated with specific organs. Most mammals and reptiles have a main olfactory system and an accessory olfactory system. The main olfactory system detects airborne substances ...
Musk is a class of aromatic substances commonly used as base notes in perfumery. They include glandular secretions from animals such as the musk deer, numerous plants emitting similar fragrances, and artificial substances with similar odors. [1][2] Musk was a name originally given to a substance with a strong odor obtained from a gland of the ...
Phantosmia (phantom smell), also called an olfactory hallucination or a phantom odor, [1] is smelling an odor that is not actually there. This is intrinsically suspicious as the formal evaluation and detection of relatively low levels of odour particles is itself a very tricky task in air epistemology. [further explanation needed] It can occur ...
Odor detection value. Odor threshold value (OTV) (also aroma threshold value (ATV), Flavor threshold) is defined as the most minimal concentration of a substance that can be detected by a human nose. Some substances can be detected when their concentration is only few milligrams per 1000 tonnes, which is less than a drop in an Olympic swimming ...
Body odor or body odour (BO) is present in all animals and its intensity can be influenced by many factors (behavioral patterns, survival strategies). Body odor has a strong genetic basis, but can also be strongly influenced by various factors, such as sex, diet, health, and medication. [1] The body odor of human males plays an important role ...
Anosmia, also known as smell blindness, is the loss of the ability to detect one or more smells. [1][2] Anosmia may be temporary or permanent. [3] It differs from hyposmia, which is a decreased sensitivity to some or all smells. [2] Anosmia can be categorized into acquired anosmia and congenital anosmia. Acquired anosmia develops later in life ...