I am still trying to wrap my head around how a chemical or flavoring going into my lungs is anymore dangerous than that very same chemical going into my stomach. I know that there are digestive enzymes in the stomach that might break down those chemicals or not. I also know that I exhale those chemicals, at least some of them, when I
vape. Let's say the ones that don't get broken down in digestion or exhaled get into my bloodstream. What is the difference? It's still the same chemicals in my one bloodstream.