A system for neutralizing odors present in exhaust air extracted from a space via an exhaust air duct, the system including an air intake chamber an air intake means for bringing environmental air into the air intake chamber and a corona chamber in air flow communication with the air intake chamber, and adapted to receive air from the air intake chamber. The corona chamber includes at least two spaced apart and perforated corona plates with perforated stainless steel mesh providing a dielectric medium into which an electrical spark voltage is provided to generate ozone from oxygen present in the environmental air to thereby transform the environmental air into ozone-rich air. A reaction chamber is also provided and adapted to receive the exhaust air and the ozone rich air allowing the mixing of the exhaust air and the ozone-rich air to thereby neutralize the odors before being discharged via an air outlet into the environment.