[kennywinker]

Again all you’re doing is providing a mechanism for how some infection could cause cancer AND smoking - not smoking causing cancer. That’s an easy one to find evidence for… just look for the co-occurrence of smoking, cancer, and this infection. Sorting out which causes which is hard but not impossible after that.

To find smoking causing cancer you’d have to find smoking increasing amongst people who get cancer. I don’t have studies to point to but i’m pretty sure that’s been looked at. By the tobacco companies if nobody else