What is another word for second-hand smoke?
Pronunciation: [sˈɛkəndhˈand smˈə͡ʊk] (IPA) 
Second-hand smoke, also known as passive smoking, is the inhalation of smoke from the burning end of a cigarette and the smoke exhaled by someone smoking. It is also referred to as environmental tobacco smoke or ETS. The term sidestream smoke is also used to describe second-hand smoke. Third-hand smoke is another term used to describe the toxic smoke residue left on surfaces and in dust. In addition, the World Health Organization (WHO) uses the term 'involuntary smoking' to refer to second-hand smoke exposure. No matter the term used, exposure to second-hand smoke is a serious health risk and can cause various diseases and illnesses.
