Yeah, people vape for different reasons. I personally don't have an issue what or in what amount anyone vapes. I would prefer that the decisions they make are informed ones though. Beyond that, it's up to them even if their choices are harmful to themselves. And i certainly don't want the government to dictate what choices we make. The governments job is to protect us from each other, not to protect us from ourselves.
Who protects us from vendors who would lie, or even falsify test results by sending in 'special' samples to get tested?