[_Nat_]

Have you explored the effects of a localized positive-pressure system?

Like, say the positive-pressure system has a duct that pumps outside-air directly to locations where a resident spends a lot of them time -- like their bed, a work desk, or a couch in a living-room. Could they get reasonable air-quality that way, even if the system isn't strong enough to clean up other areas of their home that they might spend less time in?

[ahaucnx]

Yes, this is what I am doing in my house. Pump the cleaned fresh air into the peripheral rooms (mostly bedrooms) and then this actually pressures the whole house (living room, bathrooms etc).