The Hong Kong Council on Smoking and Health commissioned a study that was carried out by researchers at Baptist University, which claimed that e-cigarette smoking is "a million times more harmful than outdoor air.”

A million times more, really? Let’s do the math.

An analysis by Dr. Konstantinos Farsalinos, a Greek cardiovascular specialist from E-Cigarette-Research states that, “The average volume of air breathed daily by humans is 20m3 (=20,000,000 mLs). Contrary to that, an average vapers consumes 3mLs of liquid (according to our survey). Thus, the levels in outdoor air in would result in total daily exposure of 960 ng. The levels of exposure from e-cigarette liquids (as tested by the Hong Kong university and assuming they are correct) are 9-1500 ng. This is from 99% less up to 50% more than exposure to outdoor air (or, to express it differently, 100 times less to ½ time more)."

So, the statement “1,000,000 times higher levels” is completely false,” Farsalinos writes on the site.