[saminfl]

However, with regard to "factory" emissions, for a long time the major sources were foam blowing and microchip cleaning.

In any case, using the words "SPEW OUT" is not very scientific. this makes me reluctant to accept what they say.

[cogitator]

Responding quickly to both posts: because the ozone depletion rate has essentially been arrested by CFC use reduction, dire "worst case" scenarios of what could have happened won't come to fruition. That's a good thing.
I agree that "spew out" isn't scientific, but the site is for general consumption and explanation.