I think you might be thinking about this

Perfluorooctanoic acid (PFOA), a chemical formerly used in the manufacture of PTFE products such as non-stick coated cookware, can be carcinogenic for people who are exposed to it (see Ecotoxicity).[66] Concerning levels of PFOA have been found in the blood of people who work in or live near factories where the chemical is used, and in people regularly exposed to PFOA-containing products such as some ski waxes and stain-resistant fabric coatings, but non-stick cookware was not found to be a major source of exposure, as the PFOA is burned off during the manufacturing process and not present in the finished product.[64] Non-stick coated cookware has not been manufactured using PFOA since 2013,[67] and PFOA is no longer being made in the United States.[66]

Shouldn’t be used anymore

PTFE is one of the greatest chemicals to ingest… if you want to grow some extra body parts.

Actually ingesting teflon “chips” (hah) shouldn’t do anything. It should just pass through without interacting with your body. Not a pleasant thought, eating them, but shouldn’t have any harmful effects either.