Ozone treatment is one of the most effective disinfection methods. Ozone is a tri-atomic oxygen molecule with oxidization abilities, which allow sterilizing everything it gets into contact with. Therefore, by performing an ozone treatment and fungus removal of the air-conditioning system, ozone treatment of the car interior is performed. Ozone treatment kills fungi, spores, moulds, mites, viruses, and all other forms of spores. Ozone removes all odours (e.g. cigarette smoke, musty odours)