The benzene produced in a combustion temperature and oxygen rich environment like an open fireplace would immediately burn into CO/2 and water. That warning applies to vaporizers. Even then you’re probably more exposed to benzene fueling up at a gas station. That said I agree you should avoid it where you can especially when it’s getting shot straight into your lungs.
Consent is far and away the biggest concern here.
The benzene produced in a combustion temperature and oxygen rich environment like an open fireplace would immediately burn into CO/2 and water. That warning applies to vaporizers. Even then you’re probably more exposed to benzene fueling up at a gas station. That said I agree you should avoid it where you can especially when it’s getting shot straight into your lungs.