Sounds like PFAS (a byproduct from teflon production). Researchers struggle to find any humans who don't have it in their bloodstream, even in remote areas. It causes birth defects.

Fun Fact: the "compostable" paper bowls offered by many fast casual restaurants like Chipotle contain this chemical, and will leech into the soil if you try to compost them.

"The Devil We Know" is a pretty unnerving documentary on this subject.