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the claim

Humans experience olfactory adaptation, in which the perceived intensity of a constant odour fades over time.

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SUPPORTED
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5 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that humans experience olfactory adaptation, in which the perceived intensity of a constant odour fades over time?

Yes. A reference article on olfactory fatigue directly states that awareness of a constant odor fades with prolonged exposure, and several peer-reviewed sources describe human olfactory adaptation or desensitization to continuous scents.

Verdict: SUPPORTED · 5 sources for, 0 against · Last checked

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Evidence for · 5
Olfactory fatigue - Wikipedia
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Olfactory fatigue - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Olfactory_fatigue

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More for · 4
Olfactory adaptation: recordings from the human olfactory epithelium -
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Olfactory adaptation: recordings from the human olfactory epithelium - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.1007/s00405-021-07170-0

Presentation Technique of Scent to Avoid Olfactory Adaptation
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Presentation Technique of Scent to Avoid Olfactory Adaptation. (n.d.). cir.nii.ac.jp. https://doi.org/10.1109/icat.2007.8

Olfactory bulb-cortex oscillations encode perceived odor intensity rather than concentration
2026
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Nordén, F., Zanettin, I., Lundqvist, M., Arshamian, A., & Lundström, J. N. (2026). Olfactory bulb-cortex oscillations encode perceived odor intensity rather than concentration. doi.org. https://doi.org/10.1371/journal.pbio.3003810

Odor-Specific Habituation Arises from Interaction of Afferent Synaptic Adaptation and Intrinsic Synaptic Potentiation in Olfactory Cortex
2009
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Christiane, L., V., M. A., Y., S. C., & A., W. D. (2009). Odor-Specific Habituation Arises from Interaction of Afferent Synaptic Adaptation and Intrinsic Synaptic Potentiation in Olfactory Cortex. eric.ed.gov. https://doi.org/10.1101/lm.1403509

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