Tobacco Smoke, Vaping, and Asthma AAFA.org 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 Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Secondhand Smoke and Electronic Cigarette Aerosols US EPA 5 Vaping Facts You Need to Know Johns Hopkins Medicine Secondhand smoke and secondhand aerosol