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 Contra Costa Health Can You Actually Get a Contact High? Green Goods The Dangers of Secondhand & Thirdhand Smoke Exposure Juul study shows secondhand vaping emissions are less toxic than cigarette smoke