Hacker News Reader

Great fire retardant, heavily used in soft foam furniture like sofas.

Also great for preventing stains, used on carpets.

Lots of attractive applications of these chemicals and that's why they're so pervasive

I did not realize this. That seems rather unnecessary.

The dental floss you're talking about is PTFE and not PFAS.

PFAS is a class of chemicals that includes both the safe/stable PTFE and cancer-causing ones like PFOA, PFOS, and new ones