Sounds a bit like an advertorial with the heads up about this dust analysis service. But dust is just accumulated material from the air. It's more of a symptom

Sounds a bit like an advertorial with the heads up about this dust analysis service. But dust is just accumulated material from the air. It's more of a symptom than the cause imo. Anna with all the nasty stuff to die from I think this is pretty low on the list to be honest unless you really have it piling up in the corners :)