Early research says secondhand smoke from vaping may not be as bad as cigarettes, but it's still not harmless. https: fox59.com news national world does vaping cause secondhand smoke doctors explain the side effects Secondhand smoke and secondhand aerosol Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy Secondhand Vape Exposure: Effects, Who's at Risk, and More It's Not Just Cigarettes: Vape Residue Sticks on Surfaces Too Thirdhand Smoke Resource Center Secondhand vaping may pose risk to your kids: New study