Second-hand smoke effects
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Living with a smoker who smokes outside
How to avoid secondhand smoke living with a smoker...
About Secondhand Smoke
Key points
- Secondhand smoke is smoke from burning tobacco products, like cigarettes, cigars, hookahs, or pipes.123
- Secondhand smoke exposure occurs when people breathe in smoke breathed out by people who smoke or from burning tobacco products.
- There is no safe level of exposure to secondhand smoke.
Even brief exposure can cause serious health problems and be deadly.
- Completely eliminating smoking is the only way to fully protect people who do not smoke from secondhand smoke exposure.4
Secondhand smoke is harmful
Commercial tobacco smoke contains hundreds of harmful chemicals.
There are more than 7,000 chemicals in commercial tobacco smoke, including hundreds of chemicals that are toxic and about 70 that can cause cancer.156
Here are just a few of the chemicals and toxins in commercial tobacco smoke:
There is no safe level of exposure to secondhand smoke.4 Even brief exposure can cause serious health problems.145 Secondhand smoke can cause coronary heart disease, stroke, and lung cancer in adults who do not smoke.14 Infants and young childre
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