I think most of them probably learned from the experience that not all clouds are smoke. It takes a while for critters to change. If you want to get a horse to stop freaking out at a fog machine, you blast them with it enough they figure out it's not harmful. These people who got hit with the cloud, same thing. I'll be I can imagine their thought processes ...
"Oh, ack, smo ... huh? What the ... ? That's not smoke. There's something that makes non-smoke clouds. Interesting."
The more people who get smacked with a cloud that doesn't hurt, stink or do more than look like smoke, the more desensitized they'll get to the whole idea. Remember, very few people have any idea vaping even exists. If you hide it from them, they're not going to learn either.
The more people who get exposed and NOT hurt, the less likely bans will stick. Remember our horse? The horse who has never been exposed to a fog machine is likely to completely freak out. A horse that's been exposed to them all over the place, at random, won't even bat an ear.
That's what I think will happen as long as the vaping community doesn't let laws, regulations or fear mongers stop us. Eventually enough people will be exposed to something they personally find out is harmless and they'll quit being idiots about it. No matter what the laws say.
There's a huge difference between, "Oh, I heard it on ..." and "I got a face full of vapor and it did nothing." They might fuss the first or third or fifth time, but eventually the vast majority will figure it out ... if they get that exposure. Just like a horse stops being afraid of a fog machine if they get exposed to it enough. There will always be idiots. There are still people who think the earth is flat. If you cater to the idiots, you'll get nowhere.