Something to add here
Personally, I don't have any asthma or allergies but I really don't like the smell of dirt. I also rather keep my vacuums clean, neat, and last as long as possible. When I used paper bags before, about once a year I would take apart a machine to clean any dust that escaped from inside the bag, I didn't mind at first but then later it gets annoying to do. HEPA is definitely for me because as a woodworker, saw dust clogs up very fast, not only that but I find it leaks worse than just regular dust. And more importantly, I definitely don't want toxic saw dust to leak from paper bags such as Poison Walnut, Fir, Makore, etc. because I rather not get either skin or eye infection in my own house.
I think the very best way to get rid of any dust from any home would be a bagged central vacuum. Let's take a Simplicity or a Riccar for example, all the dust you would vacuum up would be taken OUT of your house and into the unit of either the garage or the basement and into the HEPA bag. What's even better is adding exhaust pipes so all of the dust would be taken OUT of your home indefinitely. And the rain would later filter the air of all you have vacuumed up.
