Petrichor

One of the odors of rain is called “Petrichor.” The scent itself is that smell that lingers during rainfall after a long dry spell. The term was coined in 1964 by several Australian scientists who were studying scents.

There are some plants that release oils during long dry spells, and when rain hits these oils, the smell is released.

Petrichor is also released when chemicals from bacteria found in soil are released.