I am about 3 weeks new to vaping. I got a Zeus and I love the thing. In fact I vape more than I did smoke. So that gets me wondering. How safe is this? I know it cant be any worse than the real thing. I know there are 4 basic ingredients in the juice. But are there more that we don't know about? This is an industry that's not watched by the FDA. And whats in my smiley? What is the material that soaks up that yummy juice? I do get some wheezing and burning at times in my lungs and throat. Next bottle of juice I'm going to kick the nicotine down a level. So the question is....how safe is this really?