E cigarette flavors are toxic to white blood cells, warn scientists 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 New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking While vaping is not risk free, it is less harmful than tobacco Our World in Data