Abstract: The present invention generally relates to a system for the decontamination of air wherein airborne particles and other pollutants are either neutralized and/or destroyed by ozone. The system generally comprises an access chamber for receiving the air to be decontaminated, an ozone generator generally fluidly connected to the access chamber, and at least one treatment chamber, in communication with the access chamber, in which ozone, present in high concentration, can effectively neutralize and/or destroy the airborne particles and/or the other pollutants contained in the air. The air decontamination system is typically used in cooperation with the ventilation system of a building.