Millions of people are exposed to secondhand smoke every day. People living in multi unit housing are some of the most exposed. The only way to fully protect people from secondhand smoke at 10 Best Disposable Nicotine Vape Devices for Heavy Smokers Ziip Stick Evidence Mounts About the Health Impact of Second Hand Vaping Bisnar Chase Secondhand e cigarette vape smoke exposure increased in last 4 years, contain harmful toxins: JAMA Network study ABC13 Houston