I once purchased a “bagless” vacuum cleaner, thinking that it would be convenient to not have to worry about keeping up a supply of vacuum cleaner bags. (To be fair: that part went according to plan.) What I did not consider carefully enough was that a vacuum cleaner collects dirt. Large volumes of dirt. Large volumes of fine, powdery dirt. And, when you open the vacuum cleaner to dump out the “dirt cup”, clouds of the stuff get everywhere.
To make matters worse, the model that I bought featured two filters that also required cleaning. Some people claim that newer designs have addressed the shortcomings of earlier models, but I doubt that you can engineer your way around the clouds-of-dust problem. Without, you know, trapping the dust inside a bag of some kind.