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The researchers from the University of California San Diego Herbert Wertheim School of Public Health and Human Longevity Science note that harm perceptions for each substance were lower for occasional use than for everyday use, and lower among those who had ever used the substance than among those who had never used it. Harm perceptions remained unchanged or increased with grade for cigarettes, vapes, and alcohol but decreased for cannabis, the study states

The danger you get into if you dont pay attention to your wattage is the possibility of blowing a fuse in your car

So although its unlikely e-cigarettes will be shown to be completely harmless (nothing ever is), todays results are a landmark moment in showing just how much safer they are than smoking

If you've had a cooking mishap or dealt with cigarette smoke in a room, an ozone treatment can clear the air much more thoroughly than opening a window