It's true that flavorings are the biggest variable and it's a risk that people are taking because many feel that risk is extremely low. For example; some flavo

It's true that flavorings are the biggest variable and it's a risk that people are taking because many feel that risk is extremely low. For example; some flavorings contain diacetyl which, if inhaling too much, will lead to Bronchiolitis Obliterans or "popcorn lung", but the amount actually inhaled in e-cigarettes is 750 times less than cigarettes and vastly less than the amount inhaled by people that have developed popcorn lung. Yes, there are some chemicals in the flavoring, but the amount is fractions of that in cigarettes (flavorings usually account for less than 10% in my liquid, and much of the flavoring is more base liquid; VG and PG). I've taken the risk assessment and decided that e-cigs are much safer. Each person must do that for themselves.