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the claim

Geosmin is responsible for the earthy smell of rain.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
4 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 Geosmin is responsible for the earthy smell of rain?

Yes. A reference encyclopedia entry and a chemistry textbook both state that geosmin is responsible for the earthy scent (petrichor) that occurs when rain falls, and a review notes geosmin lends the earthy smell to soil.

Verdict: SUPPORTED · 4 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 · 4
Geosmin
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Geosmin. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Geosmin

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More for · 3
Volatile sensation: The chemical ecology of the earthy odorant geosmin.
2023
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P, G., M, A., D, U., GP, v. W., & JS, D. (2023). Volatile sensation: The chemical ecology of the earthy odorant geosmin.. doi.org. https://doi.org/10.1111/1462-2920.16381

Understanding the Chemistry of the Environment
2025
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Calvo-Flores, F. G. (2025). Understanding the Chemistry of the Environment. books.google.com. http://books.google.com/books?id=wxY4EQAAQBAJ&dq=Geosmin+is+responsible+for+the+earthy+smell+of+rain.&hl=&as_pt=BOOKS&source=gbs_api

Meaningful Scents Around the World
2006
Get citation
Kaiser, R. (2006). Meaningful Scents Around the World. books.google.com. http://books.google.com/books?id=fFFRAAAAMAAJ&dq=Geosmin+is+responsible+for+the+earthy+smell+of+rain.&hl=&as_pt=BOOKS&source=gbs_api

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