Rain Causes flavor has a typical

There are several things that can cause the smell of rain. A common thing is the oil vapor released by plants, bacteria, and chemicals.
The bacteria that cause the smell of rain was Actinomycetes, a filamentous bacteria that live in warm moist soil and can be found in various countries around the world. When the soil dries, the bacteria produce spores.

When it rains, water drips to the ground to make the spores were lifted into the air and inhaled by humans. Because the spores that have a distinctive scent, even humans who breathe it tasted. The resulting aroma bacteria will be felt when it rains followed by sunny conditions.
bacteria Actinomycetes

Similar aroma produced by the steam plant oils secreted. Oil from the plant was attached to the ground and rocks. Rain water reacts with the oils that carry over into the air in the form of gas and smelled by humans.

Distinctive smell of rain is often packaged in bottles or cans and sold as an air freshener.