human
I've heard about a new type of e-cigarette. What are these and are they safe?
assistant
I’m not sure what you mean by “safe”.  But the main thing to understand is that e-cigarettes are just another way to deliver nicotine, like cigarettes or chewing tobacco. They’re designed to be much safer than smoking regular cigarettes, because they don't contain any of the harmful chemicals found in regular cigarettes. But they still have risks associated with them, so it's important to use them responsibly and follow all safety instructions when using them.