You absolutely CANNOT USE ANYTHING WITH TEFLON OR ANY OTHER NON-STICK COATINGS THAT CONTAIN ANY OF THE PERFLUORINATED-COMPOUNDS IN THEM, SUCH AS PFOA, PTFE, ETC. WHILE YOUR BIRD IS ANYWHERE IN THE SAME HOUSE. PERIOD.
Yes, I'm screaming at you because as Noodles alreay stated above, you are going to kill your bird, it's not at all okay, and your girlfriend needs to realize this. It doesn't matter if she is cooking in the kitchen and your bird is on a totally different floor behind a shut-door, all it takes is one whiff of the off-gassed fumes under the door, through ventilation, etc. and your bird will die...And they die instantly, there's nothing you can do to help them or save them...We've had dozens and dozens of stories on here of people having their birds down in their basement behind a closed-door, 2 floors away from where they were cooking with Teflon-coated pots/pans, a George Foreman Grill (they are ALL deadly), a Toaster Oven, Convection Oven, an electric or non-electric Griddle, etc., or they where they were running a Space-Heater, an Air-Purifier, etc., and their birds suddenly gasping for air, they all ran their birds outside for air immediately, and their birds all drop over dead within a minute or two of them breathing the fumes in...Many people have lost ALL OF THEIR BIRDS AT ONE TIME...So your girlfriend and yourself both need to take an inventory of your home, and if you have ANYTHING that you're not sure is 100% safe, you need to throw it away and buy a safe replacement with no Teflon and no Perfluorinated-Compounds...
(It's not just "Teflon", Teflon is actually a brand-name of a non-stick coating that contains Perfluorinated Compounds...The fact is that ANY Cookware, Bakeware, or small appliances (as well as any "Self-Cleaning functions on your regular stove/oven) that contain any coatings inside or outside of them that contain any of the dozens of Perflourinated-Compounds WILL kill your Cockatiel instantly...No joke.
So you need to talk to your girlfriend about this and try to explain how very serious this is, and how your bird cannot be inside the house anywhere if she keeps cooking with that "multi-cooker" or anything else that isn't safe...Usually the main culprits in most homes are:
#1). Pots and Pans with a non-stick coating that contain Perfluorinated-Compounds or a Teflon brand-name non-stick coating (You need to use ONLY Ceramic non-stick, Cast-Iron, Stainless-Steel, or real Copper Pots and Pans)
#2) Small Kitchen Appliances: Most-all of the smaller kitchen appliances are not at all safe to use in a home with a bird, unfortunately. You always have to call the manufacturer of any small-appliance you are looking to buy, give them the model name and model# and confirm with them that the appliance is safe or not safe BEFORE you buy it...The most common killer small-appliances include Deep-Fryers, Air-Fryers, Crockpots, Convection-Ovens, Toaster-Ovens, Toasters, electric Griddles, Griddles that you set on top of the stove and are no electric, ALL George-Foreman Grills (have killed many, many birds), Microwaves, Coffee-makers, etc.
#3) The Self-Cleaning function on regular stoves/ovens: You just simply cannot run the Self-Cleaning function on your stove/oven. Period. You have to just scrub the inside of your oven by hand.
$4). Other Small-Appliances in the Home: Most people don't think about any appliances being lethal to their birds unless they're in the kitchen, but that's totally untrue, and many small-appliances have killed birds in homes...The most common household-appliances that kill birds are any types of Space-Heaters, any types of Air-Purifiers, Diffusers, HAIR BLOW-DRYERS (this is a big one that people don't usually thin about at all)...
****A little story for you and your girlfriend so you understand just how serious this issue is, and how dangerous it is to use any of these things with your bird anywhere inside of the house...I know of a married couple in their 50's who had been parrot-breeders for over 20 years, with the main species that they bred and hand-raised/hand-fed being Congo African Greys, different Macaw species, and Cockatiels...They also had several pet parrots that they had brought home as just-weaned babies and who were now in their 30's, including a 32 year-old Greenwing Macaw...They also had a huge indoor-aviary where their breeding Cockatiels lived...One Sunday morning they were in their kitchen getting breakfast for themselves and all the birds, and they had 4 Brooders sitting on their kitchen counter, each one holding a baby Congo African Grey that they were hand-feeding and that were only weeks old...Suddenly one of their pet Cockatiels who was flying downstairs to them for breakfast literally dropped out of the air and hit the floor...dead. They were horrified and very upset, but then all of their breeding-Cockatiels inside of the indoor-aviary in the next room started screaming and crying, so they ran into the other room and suddenly all of their Cocatiels started dropping over dead...They had no idea what was going on, they knew all about Teflon and Perfluorinated-Compounds, and had long ago thrown away any harful cookware and appliances and replaced them...Suddenly they heard their 32 year-old Macaw, WHO WAS DOWNSTAIRS IN THEIR FINISHED BASEMENT BEHIND A CLOSED, LATCHED DOOR, crying and screaming...The husband ran downstairs and carried back upstairs a dead Macaw, and informed his wife that their Cockatoo was also dead in the basement...They started running the baby CAG's in the Brooders outside, and then running any remaining, live birds outside as quickly as they could...In the end they lost over 40 parrots total (I believe it was a total of 43), including all 12 of their breeding Cockatiels, all 4 of the baby CAG's, their 32 year-old Macaw, and a 20+ year-old Cockatoo..And ALL of their birds that died were in different rooms or on different floors than the cause except for the 4 baby CAG's in the brooders...
They quickly figured out what the cause was...They had purchased a very small space-heater the week before, and that Sunday morning the husband had finally plugged it in to use it for the first time, he had plugged it in in their living room, which was connected to their kitchen...They had never thought about any other small appliances like this being harmful, only the kitchen appliances and cookware...The Space-Heater contained a coating inside of it that prevented the internal wiring from heating-up, and that coating contained PFOA, PTFE, and other Perfluorinated-Compounds...And they lost most-all of their Flock, with the only surviving birds being their Macaw breeders, who were located in a large aviary that was actually not inside of the house, but on a screened-in porch attached to the house but outside and behind their back-door. They were the only birds that weren't killed, including the ones that were down in the basement and in back-bedrooms behind closed-doors...
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