petrichor

/ˈpɛtrɪkɔː/

noun

A pleasant, distinctive smell that frequently accompanies the first rain after a long period of warm, dry weather.
“Other than the petrichor emanating from the rapidly drying pavement, there was nothing unusual about the evening.”

earthy scentrain smell

Etymology: Coined in 1964 by Isabel Joy Bear and Richard Thomas from Greek petra ("stone") + ichor ("the ethereal fluid of the gods").