Heating teflon to extreme temperatures will make it smoke, but it's way hotter than the smoke point of oil.
i.e. it's a far far higher temperature than anyone cooks at. (Maybe some specialized cooking methods, but they'd have to be without oil.)
If you did the same thing with oil, the oil would smoke and be far more toxic than the teflon.
i.e. teflon is safer than oil.
If you are not heating the pan beyond the smoke point of the oil you have nothing to worry about.
Heating teflon to extreme temperatures will make it smoke, but it's way hotter than the smoke point of oil.
i.e. it's a far far higher temperature than anyone cooks at. (Maybe some specialized cooking methods, but they'd have to be without oil.)
If you did the same thing with oil, the oil would smoke and be far more toxic than the teflon.
i.e. teflon is safer than oil.
If you are not heating the pan beyond the smoke point of the oil you have nothing to worry about.