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 5 Vaping Facts You Need to Know Johns Hopkins Medicine Secondhand Vape Plumes Could Form Lung damaging Radicals Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Study suggests switching from smoking to vaping indoors may reduce children's secondhand exposure to nicotine