What's the difference between environmental tobacco smoke and secondhand smoke?

Both terms, Environmental Tobacco Smoke (ETS) and SecondHand Smoke (SHS) mean the same thing – exposure to smoke from the burning end of a tobacco product and/or exhaled by a smoker. The terms side-stream smoke or passive smoking are also used.

Read more about EPA's Smoke-free Homes and Cars Program - www.epa.gov/smokefree

• Do IAQ problems affect certain types of schools?
• How many Indoor airPLUS items can builders self-certify?
• What is EPA's position on children's exposure to environmental tobacco smoke?