Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Can You Get Second Hand Smoke from a Vape Risks & Facts Despite widespread smoke free policies in California, rates of recent exposure to secondhand tobacco smoke, vape aerosol, and cannabis smoke among adults aged 1864 have been slowly increasing since 2020, with vape exposure E cigarettes used in about 5 percent of U.S. homes with kids UPI.com