Dust depends on breed, line, health, diet, exercise, and bathing/dust rolling/misting.
I've easily kept six to eight inside with no probs (rollers) from dust, course more from dozen to thirty need daily hot water misting, poop scraping (their poop actually creates most of dust as they flap when its dry and sticks to them etc), and a cheap decent air purifier (or fan with floss/wool etc filter on intake side) can stop any and all prob from up to forty in inside aviary. id suggest only six pigeons of rollers, as they've worked best as indoor birds for me. They'll be extremely social and no mess or noise etc compared to hookbills and other dove species and breeds.
i flew my rollers of four or best six to eight rollers, from inside, every week to day, all day at times, from condo, no trouble. lol
you could also fly your hookbills etc same as pigeons and they'll come back as well.. my rescues budgies and tiels etc always had.