[Citation needed]. Both of you.

There's been a study which found carcinogenic compounds in vapour... thing is they overdrove the thing so hard that it was burning the wick, noone would actually take a puff of that. It's the equivalent of setting a toaster to maximum and then saying that bread causes cancer.

There's little evidence of pure nicotine being carcinogenic afaik. Nicotine in tobacco is carcinogenic due to certain reactions with other chemicals in the tobacco plant

I mean, it is, but smoke and, weirdly, polonium are also very large contributors to cancer from tobacco use.