There's actually some chemistry involved too. Bacteria, plants and even lightning can all play a role in the pleasant smell we experience after a thunderstorm; that of clean air and wet earth.

A mysterious odor and "small droplets" greeted cosmonauts on the ISS when they opened the hatch to a newly arrived cargo ...

Activation patterns in the amygdala in response to pleasant smells. (A to D) Brain scans showing activation patterns. Histograms showing Shapley values of experimental participants. (E ...

Seeking to shed light on inconsistent brain activation patterns observed in previous studies of smell, a team of researchers in Lyon, France, used data mining techniques to analyze the pleasant or ...