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the claim

Smells are caused by volatile molecules from an object that drift into the nose and bind to olfactory receptors.

the verdict
INSUFFICIENT LEANING
Recorded sources
8 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 smells are caused by volatile molecules from an object that drift into the nose and bind to olfactory receptors?

Unclear. Several reference and peer-reviewed sources partially support the claim: they confirm that volatile odorant molecules enter the nasal cavity and bind to olfactory receptors, but none explicitly states that these molecules drift from an object into the nose.

Verdict: PARTIAL LEAN · 8 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 8
Olfactory receptor
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Olfactory receptor. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Olfactory_receptor

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More for · 7
Olfactory fatigue
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Olfactory fatigue. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Olfactory_fatigue

What are the factors controlling the fate of post-adhesed volatile molecules of the olfactory epithelium?
2013
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What are the factors controlling the fate of post-adhesed volatile molecules of the olfactory epithelium?. (2013). chemistry.stackexchange.com. https://chemistry.stackexchange.com/questions/4278/what-are-the-factors-controlling-the-fate-of-post-adhesed-volatile-molecules-of

Sense of Smell: Structural, Functional, Mechanistic Advancements and Challenges in Human Olfactory Research -
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Sense of Smell: Structural, Functional, Mechanistic Advancements and Challenges in Human Olfactory Research - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.2174/1570159X17666181206095626

Olfactory Nerve: Overview, Function & Anatomy
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Olfactory Nerve: Overview, Function & Anatomy. (n.d.). my.clevelandclinic.org. https://my.clevelandclinic.org/health/body/23081-olfactory-nerve

Odorant-binding proteins of mammals.
2022
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Pelosi, P. & Knoll, W. (2022). Odorant-binding proteins of mammals.. doi.org. https://doi.org/10.1111/brv.12787

The Nose Knows: Understanding the molecular underpinnings of learning and adaptation through the main olfactory epithelium
2025
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Beka, S. (2025). The Nose Knows: Understanding the molecular underpinnings of learning and adaptation through the main olfactory epithelium. doi.org. https://doi.org/10.7916/wx04-5m11

Olfactory Fingerprints for Major Histocompatibility Complex-Determined Body Odors II: Relationship among Odor Maps, Genetics, Odor Composition, and Behavior
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Olfactory Fingerprints for Major Histocompatibility Complex-Determined Body Odors II: Relationship among Odor Maps, Genetics, Odor Composition, and Behavior. (n.d.). cir.nii.ac.jp. https://doi.org/10.1523/jneurosci.22-21-09513.2002

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