I agree with fifi that this is very irritating. Even if you were to throw out all your PTFE cookware (and light bulbs, I suppose), you would still be left with a lot of plastic in your kitchen. All plastics emit gases, especially when heated. (That wondeful "new car" smell, for instance, is the result of outgassing.) Many of these gases are poisonous in sufficient amounts, and birds are particularly susceptible. Anyone who keeps a bird in a poorly ventilated kitchen is a fool, and a cruel one at that.