Yes that's very clever. History though, is pretty clear about whose boots kick down whose doors when this plays out. Very fine people on both sides though im sure.
Show me the trash, show me the tools, show me the isotopes, show me the ice cores. This is easy stuff. Sometime absence of evidence really is evidence of absence
The problem is local bullies taking advantage of people who cant leave. If you cant put a floor under peoples quality of life, you cant avoid this problem.
Presumably they would be poisoned by the large amount of right handed biochemistry thats everywhere already.. It might be super hard to keep them alive in nature at all.
But if youre in the lab and thinking about it could ya whip us up some C-F eating/mineralizing micros? Talk about whats poisoning the biosphere..