https://www.petcoach.co/article/teflon-toxicity-ptfe-toxicos...
Sure, if you're extremely careful about using it, it's possible. That's why my previous comment wasn't absolute. But the majority of people I've known who use them seem to treat the pans poorly and cook with them at all temperatures. Many times they only own nonstick pans (who has space for multiple sets in an appartment?), and use them at all temperatures.
I see the risk as being in the level where I choose not to use teflon pans, but not extreme enough to ban it or force others to follow my choices. I think the environmental impact from the manufacturers is a bigger concern that should be monitored more closely. I think they have a Netflix documentary about one place in WV. Of course the company switched to a new (largely untested) chemical for new coatings. Just a shell game to stay in compliance or public favor, like with BPA vs BPS.
Did you ever hear of a canary in a coal mine? The miners would take birds in with them to alert them to dangers gasses. If there were dangerous gasses he bird would typically die before the miners did. This is because the bird has very high performance lungs so that they can supply enough oxygen to beat their wings quickly.
You basically can't own a bird in an appartment and cook with teflon cookware or run the self clean setting on the oven (they are teflon coated inside) because the fumes will kill them.