In your case I would start very slowly. Even a purifier producing a real amount of 12mg per hour in a small 10 by 10 room would be more than sufficient to start with if it were running constantly. Most output claims of purifiers are grossly exaggerated. Even the Enaly does not put out what it says it does. I would guestimate the Enaly 200 at 60 to 80 mg per hour. Get a machine that is fully adjustable from 0 to full output so you can adjust it as you get used to the amount of ozone.