There are many things you can do with an ozone generator. These machines are mainly used to eliminate odors, considering it affects microbes and other particles in the air. It can save you from allergies that might plague you year-round, including dust, pollen, and pet dander.
You should never run an ozone generator while in the same room, though. While it affects these airborne particles, it can also harm you and any pet you might have in the room. Because of this, it is also a good tool to use against mold infestations and keeping your home free of mold.
There are a lot of things you can do with an ozone generator, all said at http://www.damagecontrol-911.com/kill-mold-with-an-ozone-generator/
It should be noted that ozone won’t remove mold if it is already in your home. You will need a special mold remediation service to get rid of it. However, it can keep the mold from spreading to other areas and surfaces if you run it in the room that the mold is in.
Treat the mold as if you would a regular odor, so simply run it for a few hours while no one or no animal is inside. After a few hours, the ozone will disappear and turn back to regular oxygen.