I remember sitting in a park once around 2am after a lightning/ heavy rain storm, and I guess the ozone + freshly blooming spring flowers really set it off. It was divine.
Worms, at least Earth worms, can indeed produce a very similar smell minus the flowers
The warm rain in NW Arizona has a curious smell to that I can't quite place. It kind of smells like sage but not really, It kind of smells like a creosate bush but not really. It even kind of smells like wet hemp rope but not really. Mixed in with all of that is like a burnt or maybe roasted wet smell. Like you roasted some herbs and doused them with water right before they charred. I've smelled rain on both coasts, in the NW Rockies, the jungles of Central America, the Carribean, many locations in Eastern Canada, up and down the NE states, and throughought the SE but I never smelled rain anything like this.
