I knew about the experiment with mice that lived in a PG mist for two years, but hadn't heard about the findings of protection against influenza and other virus types. I used to have one bad cold a year, but haven't had one since I started vaping, FWIW. That's been almost 3 years, so there must be something to it. There have been times when almost everyone in my immediate family came down with a cold and I didn't.
No wonder my doctor is so pro vaping. He asks me every time I go in if I'm still not smoking. I tell him I'm not. Then, he asks me if I'm still vaping. I say yes and he says, "Good!", and goes on to the next item.