Dust gathering in homes at this very moment is more alive than you might think.
There is a story by Jennifer Viegas in Discovery News about a new paper from Noah Fierer, Rob Dunn and others on the microbiology of household dust.
Source: Bacteria in Household Dust Reflect Who Lives There : Discovery News
And there is also a solution for household dust, is to have an air purifier germ guardian they pretend it has a 3 in 1 cleaning stages
Yes but when we talk about dust generated in a work place like in woodwork industry for example , then a dust extractor is more adequate to this situation.