[MargaretR]

I do not see any dustcloud - maybe it is all trapped in the large clumps of shed fur.
The dust I used to see collected by my old machine was finer and did escape from the bag when I was disposing of it.
Maybe I am now trapping fine dust another way-
my Goodsphere/Pureair machines contantly 'wash' the air and do collect a fine sediment in the water (changed daily)