There is an association with the used of vaporizers and a condition called popcorn lung. Which is a toxicity of inhaling the carrier fluid.
E-cigarettes in my opinion only have a place in a commitment to smoking cessation to be able to control the amount of nicotine that is being administered and always decrease it so that the withdrawal is not as bad.
It should not be associated with a healthy smoking option or even healthier rather a tool to be able to successfully quit. In the end the person needs to be able to deal with the underlying problem that they are using smoking as a crutch like anxiety, trauma, PSTD etc.
@healthbasics respectively agree sir :)