I think the takeaway from this is that an unconfirmed minimal shoestring “study” isn’t a conclusive anything.
The minimal study being the one done in the link I shared in OP?
If yes, I agree that's one take away. But not the one I was going for. I think it worthy of study how many vapers have gotten far fewer colds than when they were non-vapers. You'd think that information would be conveyed and touted as benefit, if it holds true that most vapers do experience less colds since becoming vapers.