[sirsinsalot]

Paper straws and paper wrapping, cartons and so on are lined with PFAS. Paper isn't waterproof so to get the green credentials they coat it with PFAS.

That cheeseburger wrapper, feels waxy doesn't it? That's PFAS.

[hilbert42]

Right. However, traditional pre-WWII greaseproof paper didn't contain them (as that was before organo-fluorine chemistry was commonplace), and it worked pretty well. Why not simply revert to that?

It may not be as efficient as paper laced with PFAS but it would certainly be good enough.