Here are just a few. Ozone is present throughout nature. Ozone occurs around crashing surf, white water rapids, and lightning storms. Ozone is nature's air freshener. Ozone has a distinct 'electrical' odor.
Every lightning bolt produces ozone that eliminates odors present in the air.
This is the reason the air smells fresh after a strong electrical storm. See diagram below. Ozone Generation from Electrical Discharge Ozone is extremely unstable and easily reacts with other chemicals. This reaction is called oxidation. Oxidation occurs when electrons are exchanged between molecules, which changes their molecular structure.