ETS

Passive smoking is the inhalation of tobacco smoke by individuals who are not actively smoking. It occurs when tobacco smoke diffuses into the surrounding atmosphere as an aerosol pollutant, which leads to its inhalation by nearby bystanders within the same environment. Such pollutant is known by various names, including passive smoke, second-hand smoke (SHS) or environmental tobacco smoke (ETS). Exposure causes many of the same health effects caused by active smoking, although at a lower preval