That story sounds like part of a government public educational campaign. If they get people to think humans are capable of polluting outer space, then they get people to be more concerned about polluting our domestic atmosphere. (to create jobs)
If we didn’t succeed in ruining our atmosphere by now, we never will. That’s my view. Even when Saddam Hussein lit up thousands of oil wells burning for ten MONTHS!! Nothing. I didn’t see any smoke be me. Like pissing in the ocean.
In fact all sea life must be pissing in the oceans and they are fine. Some oceans I’ve seen photos, are still crystal clear blue around the Bahamas .