- Secondhand Smoke - American Cancer Society
- Secondhand Smoke: Questions and Answers – National Cancer Institute
- Secondhand Smoke: MedlinePlus
- Smoking and Tobacco Use :: Secondhand Smoke :: Office on Smoking and Health (OSH) :: CDC - Centers for Disease Control and Prevention
- Secondhand Smoke – American Lung Association
- The Truth About Secondhand Smoke - American Heart Association
- SmokeFreeOregon.com | Secondhand Smoke Facts
- Tobacco Free California | Secondhand Smoke Facts | Smoke-free Workplaces, Homes and Cars | Smoking in Movies
- Smoking and How to Quit – Secondhand Smoke - WomensHealth.gov
- Second Hand Smoke : Search Results – healthfinder.gov – Your Source for Reliable Health Information
- The Health Consequences of Involuntary Exposure to Tobacco Smoke: A Report of the Surgeon General - Comprehensive discussion from 2006.
- AAP CHILDREN’S HEALTH TOPICS: SECONDHAND TOBACCO SMOKE - American Academy of Pediatrics
- Neuroscience for Kids – Nicotine, Second Hand Smoke, Infants
- What is third-hand smoke? Is it hazardous?: Scientific American
