I've always tried to air my home out as much as I can while cooking. Pretty much all windows are open. Article reaffirms my core avoidance of things like toasters/microwaves.
The article does mention toasters as a particularly bad culprit, but the word `microwave` doesn't appear anywhere in the text. Curious how you have arrived at this connection between two very different devices.
I would have to think a microwave would be rather clean, considering it is hard to really "burn" something in one.
Erroneous jump to conclusions from my side, I think I naturally group electric appliances in the household in the same 'bad' category. I admit that is an error on my part.