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A Centers for Disease Control and Prevention study of the 40 most widely used popular brands of moist snuff showed that the amount of nicotine per gram of tobacco ranged from 4.4 milligrams to 25.0 milligrams (3)

A quick glance at the MSDS for lactic acid on the CDC website suggests that lactic acid is basically safe to inhale, with the acute inhalation symptoms consisting of a burning sensation, cough, sore throat and shortness of breath

Here's how to make sense of these seemingly conflicting findings

"The health effects and potentially harmful doses of heated and aerosolized constituents of e-cigarette liquids - including solvents, flavorants and toxicants - are not completely understood," stated Murthy in his 2016 report