If it turns out that it is a serious health threat, then pretty much anyone alive today is f*ked. and given the build up of it, will be for quite a while.
But we also have climate change, AI apocalypse, global thermonuclear war, mcDonalds, and all other things at the same time.
And we wont know if whatever it is replaced with, if will be replaced will turn out any better for humanity in the long term.