Petrichor describes the unique smells following a rain shower. Australian scientists coined the term in 1964 and determined that it was caused by chemical compounds. Chemicals associated with ozone, geosmin and plant oils can all contribute to unique smells on a rainy day.
People love that earthy smell after it rains. It turns out there is a good science reason for it, and it s been captured using high-speed imaging.Petrichor is the phenomenon first characterized by Australian scientists as the smell released after a light rain.