How do you know the dust is solder? How is the solder getting out of the sucker? Let alone turning into a fine powder? How much desoldering are you doing?? T

How do you know the dust is solder? How is the solder getting out of the sucker? Let alone turning into a fine powder? How much desoldering are you doing?? There are far more likely sources of particulate matter, such as flux which we know does get aerosolized.