Why do we love the smell after it has rained?

Nabhan, Daugherty, and Hartung report that “Desert dwellers know it well: the smell of rain and the feeling of euphoria that comes when a storm washes over the parched earth. That feeling, and the health benefits that come with it, may be the result of oils and other chemicals released by desert plants after a good soaking. . . . ‘The Sonoran Desert flora is one of the richest in the world in plants that emit fragrant volatile oils, and many of those fragrances confer stress-reducing health benefits to humans, wildlife and the plants themselves,’ said Gary Nabhan. . . . ‘The fragrant volatile organic compounds from desert plants may in many ways contribute to improving sleep patterns, stabilizing emotional hormones, enhancing digestion, heightening mental clarity and reducing depression or anxiety,’ Nabhan said.”

“The Smell of Desert Rain May Be Good for Your Health.”  2022.  Press release, The University of Arizona, https://news.arizona.edu/story/smell-desert-rain-may-be-good-your-health