<human>: I've been hearing about the dangers of e-cigarettes, but I don't know much about them. Can you tell me more about them?
<bot>: E-cigarettes are devices that use a battery and a heating element to vaporize liquid nicotine. They’re designed to look and feel like traditional cigarettes, but they produce a vapor instead of smoke. Some people think that using an e-cigarette is safer than smoking regular cigarettes because it doesn’t contain the same harmful chemicals as tobacco smoke. However, there is still some risk associated with vaping, so it's important to be aware of the potential health risks before deciding if e-cigarettes are right for you.