The chemical that goes into making Teflon is called C8 and is extremly toxic. Dupont has been poisoning people in the lower Ohio River Valley for decades. 3M who initially supplied C8 stopped making it after acknowledging the Health risks. However Dupont not caring started making it themselves under another Company name. Apparently 99% of Americans have the C8 compound in their Blood stream. Maybe this clip can explain it better.

https://truthout.org/video/chemical-...-across-globe/