Is there some type of fan or something that takes out all the dust in a room leaving it dustless?
A dyson. Vacume cleaner.
http://www.gizmag.com/dyson-air-multiplier-bladeless-fan-line-extended/15505/When I worked as a cleaner, I worked for a man who was very sick with cancer and his wife had bought him this fan. He told me it keeps the air clean so he can't catch anything/
Brookstone has these, look there for information then go online for more reasonable prices, like Amazon.com. I think they're called ionizers.
I always heard that candles eat dust !