The confusing issue is something called “Flashing”.
Flashing describes the chemicals that you should be concerned about, evaporating from the paint. These are solvents known as “VOC’s” (Volatile Organic Compounds).
VOC’s are why you need to keep the area you’re painting the cage in, well ventilated even when using what are known as safe paints.
Some people may acquire a bird that comes with the cage that’s too small or old to begin with.