The filter material allows the air to past through but catches the air borne pollutants in the filter material. Ozone air cleaners remove nothing from the environment. Bacteria are neutralized and all airborne pollutants are electrically charged so that they are attracted to the floors and walls of the room. The pollutants will continue to build up on the floors and walls till they are removed by some other means. To understand Ozone generators you must firsts understand what Ozone is and what its effects are.
Ozone is a very special kind of oxygen molecule.
A molecule is a group of atoms that are electrically connected to each other. This combination of oxygen atoms is stable. Ozone is not stable. As stated above ozone is toxic. Ozone is also toxic to plants at levels of 0.01 to 0.05 parts per million with an exposure time of several hours.