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 Second Hand Vaping: Minimal Impact Compared to Smoking Secondhand Smoke Vermont Department of Health Secondhand exposure from vaping marijuana: Concentrations, emissions, and exposures determined using both research grade and low cost monitors ScienceDirect Did you know smoking leaves behind more than just smoke?Thirdhand smoke is the toxic residue left on clothes, furniture, walls, and even toys after someone smokes or vapes. These hidden chemicals Secondhand vape exposure: Risks and side effects