“Petrichor” is the wonderful word that describes the wonderful scent of the air after a rain shower

Petrichor is the earthy scent produced when rain falls on dry soil. The smell derives from an oil exuded by certain plants during dry periods, whereupon it is absorbed by clay-based soils and rocks. During rain, the oil is released into the air along with another compound, geosmin, a metabolic by-product of certain actinobacteria, which is emitted by wet soil, producing the distinctive scent; ozone may also be present if there is lightning.

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