Tag Archives: rainfall


What is Petrichor? That’s Geosmin You Smell

Geosmin is a chemical you’ve never heard of but your nose recognizes it whenever it rains. It is the chemical that produces that unmistakable aroma of freshly turned soil or rain mixing with dry earth. The smell is so distinctive it even has a name, petrichor, which loosely translates as earth odor. This chemical impacts our lives in many interesting ways.

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