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 Secondhand smoke and secondhand aerosol Tobacco Smoke, Vaping, and Asthma AAFA.org Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center