Ozon is a molecule composed of three oxygen atoms, represented chemically as O3. It is a pale blue gas with a distinct, sharp smell, often associated with the fresh scent after a thunderstorm. Ozon occurs naturally in the Earth's atmosphere, particularly in the ozone layer, which protects living organisms by absorbing harmful ultraviolet (UV) radiation from the sun. In addition to its natural presence, ozon is used in various applications, including water purification and air treatment, due to its strong oxidizing properties. It can effectively kill bacteria, viruses, and other pathogens, making it valuable in maintaining hygiene and safety in different environments.