If you get good quality juice versus buying a Blu or vuse you don't worry about "chemicals" those are made in huge factory that have no care for health of consumers because they are owned by big tobacco companies. Instead a good premium juice's ingredients are usp grade propylene glycol, vegetable glycerin, flavor (most of which is natural/organic), and lastly nicotine. So to say they are filled with chemicals and unsafe, rethink what you eat because those ingredients are in almost everything you eat or drink.