that jumped out at me too, but one has to think that a bunch of clearly dedicated scientists (I'd have gone home at -10) would have given thought to pumping CFC's into a pristine lake.
Let's hope so
Let's hope so
The problem with CFCs is that you get a stable compound by reacting really reactive things together, and now they can't find anything they want to react with more. So when they get into the upper atmosphere and get broken apart by hard radiation, you now have really reactive stuff mixed in with the fragile ozone layer. And they act as a catalyst to break down ozone.
But you can breathe them all you want, and (assuming you got enough oxygen) will suffer no ill effects.