Secondhand smoke and secondhand aerosol Breathing in someone else's smoke or vape isn't harmless. Secondhand smoke exposure can affect your lungs, brain, and overall health. Protect your families and yourself. Inhalar el humo o el vapor de Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Can I be Affected by Secondhand Vape Smoke? Second hand vaping exposure very low compared to second hand smoking UCL News UCL University College London It's Not Just Cigarettes: Vape Residue Sticks on Surfaces Too Thirdhand Smoke Resource Center