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 Asthma and Allergy Foundation Tobacco can be bad for your health even if you are not the one smoking. Breathing in the smoke can lead to many health problems. Vaping is CA DPH Misrepresents Cannabis Smoke & Vape Hazards Using Anti Tobacco Funds CaNorml.org Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA