Oh, come on. Seriously? Just google "e-cigarette smoke harmful" and click on any of the results.
Here's a random sample:
"Second-hand smoke from electronic cigarettes may be less harmful than their tobacco-laden cousins, but they still release toxins into the air, according to a new study.
For the study, published in the Journal of Environmental Science, Processes and Impacts, researchers at the University of Southern California analyzed second-hand smoke from e-cigarettes and found an overall 10-fold decrease in exposure to harmful particles compared to traditional cigarette smoke. However, they did find a significant increase in exposure to some harmful metals coming from e-cigarette smoke.
Second-hand smoke from e-cigarettes also yielded exposure to almost no polycyclic aromatic hydrocarbons — cancer-causing compounds known as organic carcinogens — that are released into the air as tobacco cigarettes burn. But despite having less harmful organic compounds and an overall decrease in toxic metal emissions, e-cigarette smoke did contain chromium and nickel at levels four times higher than tobacco cigarettes. Lead and zinc were also found in the smoke, but they occurred at levels lower than regular cigarettes."
Here's a random sample:
"Second-hand smoke from electronic cigarettes may be less harmful than their tobacco-laden cousins, but they still release toxins into the air, according to a new study.
For the study, published in the Journal of Environmental Science, Processes and Impacts, researchers at the University of Southern California analyzed second-hand smoke from e-cigarettes and found an overall 10-fold decrease in exposure to harmful particles compared to traditional cigarette smoke. However, they did find a significant increase in exposure to some harmful metals coming from e-cigarette smoke.
Second-hand smoke from e-cigarettes also yielded exposure to almost no polycyclic aromatic hydrocarbons — cancer-causing compounds known as organic carcinogens — that are released into the air as tobacco cigarettes burn. But despite having less harmful organic compounds and an overall decrease in toxic metal emissions, e-cigarette smoke did contain chromium and nickel at levels four times higher than tobacco cigarettes. Lead and zinc were also found in the smoke, but they occurred at levels lower than regular cigarettes."