<img src='https://i.cbc.ca/1.4643913.1525209350!/cpImage/httpImage/image.jpg_gen/derivatives/16x9_460/liquid-nicotine-child-packaging.jpg' alt='Liquid Nicotine Child Packaging' width='460' title='This image provided by the Food and Drug Administration shows packages of e-liquid nicotine, at left and juice boxes on the right. The US Food and Drug Administration issued warnings Tuesday, May 1, 2018, to more than a dozen makers of liquid nicotine for packaging their vaping formulas to resemble childrens' juice boxes, candies and cookies. ' height='259' /> The U.S. Food and Drug Administration has sent warning letters to companies that make e-cigarette liquid nicotine products look like candy and cookies.