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Anosmia

Anosmia means loss of smell. Learn how it differs from reduced smell and adaptation to a familiar perfume, and when a change in smell needs medical assessment.

Updated

Anosmia is the loss of the ability to detect odors. Hyposmia means a reduced ability to smell. These terms describe the sense of smell, rather than how strongly a perfume projects.

Not noticing one familiar fragrance does not establish anosmia. Repeated exposure can reduce awareness of a scent, the perfume may have faded, and sensitivity to particular odors varies. Smelling a perfume on clothes but not on skin cannot distinguish those possibilities by itself.

If your sense of smell has changed across everyday odors, discuss it with a clinician. Smell disorders have several possible causes and need assessment; applying more fragrance is not a way to diagnose or treat them.

Source: NIDCD: definitions and assessment of smell disorders

Anosmia
Loss of the ability to detect odors.
Hyposmia
A reduced ability to detect odors.
Parosmia
A change in how an odor is perceived: a familiar smell may seem different or distorted.
Phantosmia
Perceiving an odor when no odor source is present.
Olfactory adaptation
Reduced perception after continued or repeated exposure to a smell. It can make a fragrance seem quieter to its wearer without establishing whether it has faded for everyone.

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