Hey guys!, how are you? I am a little worried because i dont know how to check if the flavoring contains or not oil and other chemicals that could harm my lungs and my hardware. What should i ask/check before buying? I know that a flavor is good when it is water soluble, without any artificial colorings or tryglicerides but.. the main question remains: how can i check it? Have you got any suggestions? What are your thoughts? Take a look at this image: Thanks!