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Secondhand smoke occurs when someone uses and exhales tobacco products such as cigarettes, cigars, or pipes, and the smoke is then inhaled involuntarily by others.

Learn More

American Lung Association

• Do You Smell Smoke? |

CDC

• Secondhand Smoke |
• Ventilation Does Not Effectively Protect People Who Don't Smoke from Secondhand Smoke |
• Tobacco Use and Secondhand Smoke Exposure is High in Multiunit Housing |
• How to Protect Yourself and Your Loved ones from Secondhand Smoke |
• There is No Risk-Free Level of Exposure to Secondhand Smoke |
• Vital Signs: Disparities in Nonsmokers' Exposure to Secondhand Smoke |
• Vital Signs: Secondhand Smoke |

EPA

• Secondhand Smoke and Smoke-free Homes |