What Is Secondhand Smoke?
Secondhand smoke is composed of sidestream smoke (the smoke released from the burning end of a cigarette) and exhaled mainstream smoke (the smoke exhaled by the smoker). While secondhand smoke has been referred to as environmental tobacco smoke (ETS) in the past, the term “secondhand” smoke better captures the involuntary nature of the exposure. The 2006 Surgeon General’s report uses the term “involuntary” in the title because most nonsmokers do not want to breathe tobacco smoke. The term “involuntary” was also used in the title of the 1986 Surgeon General’s report on secondhand smoke. Cigarette smoke contains more than 4,000 chemical compounds. | Read more
What Is Thirdhand Smoke?
Ever take a whiff of a smoker’s hair and feel faint from the pungent scent of cigarette smoke? Or perhaps you have stepped into an elevator and wondered why it smells like someone has lit up when there is not a smoker in sight. Welcome to the world of third‐hand smoke. “Third‐hand smoke is tobacco smoke contamination that remains after the cigarette has been extinguished,” says Jonathan Winickoff, a pediatrician at the Dana–Farber/Harvard Cancer Center in Boston and author of a study on the new phenomenon published in the journal Pediatrics. | Read more