This is absurd. The majority of carcinogenic properties from cigarettes is from the tar. tar is a residual byproduct of any BURNING plant matter including tobacco, cannabis, oak..... that's the beauty of vaping. it's literally shifting the matter-state from liquid to gas. as for the pneumonia "suggestion," that has to be nothing more than a theory. the main symptom of pneumonia is excess fluid in the lungs. some "Scientific expert" must have come to the conclusion that too much vapor will ultimately condense in the lungs, causing "pneumonia"
Probably the same genius that realized pv's will be very difficult to regulate and tax-rape because mods are simple devices that are relatively easy to manufacture and the liquid is made from stuff that is already regulated under different tax codes. they could tax nicotine....actually that would be great. more taxes on tobacco and incentive to cut out the worst part of my vaping? i vote yes.