Poison gas, that is. Which can be created by teflon frying pans.
DuPont studies show that the Teflon offgases toxic particulates at 446 F. At 680 F Teflon pans release at least six toxic gases, including two carcinogens, two global pollutants, and MFA, a chemical lethal to humans at low doses.
It gets worse.
At temperatures that DuPont scientists claim are reached on stovetop drip pans (1000 F), non-stick coatings break down to a chemical warfare agent known as PFIB, and a chemical analog of the WWII nerve gas phosgene.
And don’t use teflon around Tweety, either.
Avian veterinarians have known for decades that Teflon-coated and other non-stick cookware can produce fumes that are highly toxic to birds.