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 Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Is 2nd Hand Vape Smoke Bad Is There 2nd Hand Smoke From Vapes Covid 19 According to a Centers for Disease Control and Prevention (CDC) study, 40% of U.S. adults believe that children's exposure to secondhand aerosol from e cigarettes causes only some or little harm, and 5% Does Vaping Cause Secondhand Smoke? Should I Be Concerned About Secondhand Vaping?