Wow, didn't think my post would elicit that kind of response! Maybe you were just joking, deal with dust allergies, or have an aversion to vintage Eurekas. But I'll respond as if none were the case.
It's true that most of the vintage vacs prior to HEPA bags and better filtration leak dust, but I consider that housework was more of a priority for most in the past who lived by "cleanliness is next to godliness". So, cleaning was more routine and caring for equipment followed suit; both of which minimize the effects of conventional filtration that you portrayed in your comment.
I also vacuum and dust frequently and change/empty vacuum bags regularly; albeit I still use tissues for good hygiene. Btw, I have 2 Rugulators & a Dial-A-Nap with F & G bags, and a Roto-Matic Power Team that that takes H bags; along with a Kirby with a shake-out bag, Hoover Convertibles with Type C bags, and Electrolux tanks using paper Style Cs.
Furthermore, only one of my relatives, my uncle who was a smoker, had emphysema; and he lived to be 87. No one else had or has had breathing difficulties and were in "relatively" good health (pun intended). Most also lived or are living into/in their 80s (one just had her 92nd birthday) despite using vacuum cleaners with conventional filtration back in the day. And I am in excellent health - no medications, or pain relievers - only an old bag of cough drops (thank God).