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 Secondhand smoke and secondhand aerosol Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Can I be Affected by Secondhand Vape Smoke?