Second hand smoke outdoors is proven health risk.
Utendørs passiv røyking er bevist skadelig.
“We were surprised to discover that being within a few feet of a smoker outdoors may expose you to air pollution levels that are comparable, on average, to indoor levels that we measured in previous studies of homes and taverns,” said Wayne Ott, professor (consulting) of civil and environmental engineering at Stanford and co-author of the JAWMA study. “For example, if you’re at a sidewalk café, and you sit within 18 inches of a person who smokes two cigarettes over the course of an hour, your exposure to secondhand smoke could be the same as if you sat one hour inside a tavern with smokers. Based on our findings, a child in close proximity to adult smokers at a backyard party also could receive substantial exposure to secondhand smoke.” Stanford University
“But our findings show that a person sitting or standing next to a smoker outdoors can breathe in wisps of smoke that are many times more concentrated than normal background air pollution levels.” Stanford University