I see people on this thread commenting on cleanliness, air purifiers, and the like, and I suppose that's fine. But, I would like to be very, very clear here. I clean religiously, change the cage tray papers every single night and vacuum every single evening. I ran an Austin and a Holmes air purifier, spritzed the grey regularly, and I kept windows open in the summer time. I had ONE African Grey, on the small side, not even caged all that close to my RFM. And, my macaw died from exposure to her dust in three years.
People can say whatever they like, make any sort of rationalizations that they like, but IMO, facing hard facts doesn't constitute a panic.
Clearly, not every bird will react to the dust the way my Zoe did, but, make no mistake, if your bird does, you will not know until it is too late.