averaged only one per month. the centers for disease control says the liquids in flavors like mellon and strawberry look and smell like candy. so one mouthful of this for a child is like eating -- >> that's like eating four or five cigarettes. that could be lethal. >> reporter: and you don't even have to swallow it to get sick. >> you have gotten calls from people while they're filling this thing up, it spills on their skin, and they start to feel sick. >> you can start feeling sick in as little as four to five minutes. >> reporter: a spokesman for e cigarette makers say they want child proof packaging and warning labels and they're working with regulators but he puts some of the safety burden on consumers, too. this is an adult product and should be treated as such, he wrote. responsible behavior should be promoted and endorsed. the centers for disease control all these liquids a threat. poison experts say bottles can spill, cartridges can break, and little hands can get into this highly concentrated poison.