In a list of the best smelling things in life, fresh rain has got to be somewhere near the top — maybe above newborn babies and below chocolate chip cookies?

Rain smells so good that there’s even a name for its signature odour: petrichor.

Now, using high-speed cameras, scientists have captured a strange effect that could explain why rain smells so wonderful. In the video, you can see little particles popping up off the surface of the droplets. The Washington Post reports that scientists suspect that it’s these aerosols that are responsible for the aroma.