![]() There is growing evidence that using e-cigarettes can harm lung health and puts users at greater risk of contracting COVID-19.Thus, their health consequences are not well known when consumed in this manner. ![]() While many of the flavorings and humectants used in e-liquids have been approved by the Food and Drug Administration for oral consumption, they have not been approved for inhalation.Solutions, sometimes called e-liquids, almost always include nicotine, flavoring and a humectant, such as propylene glycol, to retain moisture and create the aerosol when heated.E-cigarettes are devices that operate by heating a liquid solution to a high enough temperature so that it produces an aerosol that is inhaled.
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