Here is exactly what I am talking about.
In H1N1 Flu Battle, Electronic Cigarettes Could be a Surprising Ally
I find that most articles like this are published by someone who is really just wanting to plug their business.
I must say that the 1940s study does raise some intriguing questions to the benefits of PG, but no recent studies have been done that I am aware of that either confirms or denies these claims. If you already e-Smoke, then you are probably like me, and am going to continue to do so. Hey, if it helps it helps, but do not depend on it to keep you from getting sick, and don't start e-Smoking just because you think it might.