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 Is Second Hand Vape Smoke Bad For You? Learn How to Avoid its Side Effects About one in four adults in California report being exposed to secondhand smoke or vape in the past two weeksoften on sidewalks, at home, and in recreational spaces like parks and beaches. It's Not Just Cigarettes: Vape Residue Sticks on Surfaces Too Thirdhand Smoke Resource Center Secondhand smoke and secondhand aerosol Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association