I think that is kind of the major one that sticks out in my mind. But, its just more sinister then that IMO. Being that it is something newer, I have a feeling more will pop up.

I was friends with a major twitch streamer who used to vape literally 24/7, every stream. He got esophageal cancer and died after fighting it for ~1-2 years, roughly around age of 23. Now, obviously this is anecdotal, and obviously it could have just been bad luck/other factors/coincidence. But, I have always raised an eyebrow towards vaping since then. The only forms I consider safer with minimal consequence is dry herb based vaping with convection heat --- See silver surfer vapes for example.