Why Does Rain Smell|Smelly Rain Known As Petrichor|Pleasant Rain Smell Generator|The Science Behindbr br #levelup4u|| #informativebr br WATCH: There's a Reason You Love the Smell of Rainbr br And, spoiler alert: it makes everyone smile. This phenomenon is known as petrichor, and it's caused by the release of specific chemicals when the rain reaches the ground.br br Let’s watch in detail moving forward….Don’t forget to like, Subscribe & Comment.