A system is provided for treating a trash chute with an aerosolized compound. The system includes an aerosol discharge unit mounted to a door frame of a fire door arrangement of the trash chute with an aerosol outlet thereof in fluid communication with the trash passageway a liquid diffusion appliance mounted remotely from the trash chute and the fire door arrangement, the liquid diffusion appliance including a compound in liquid form to be aerosolized and including a control system for operating the liquid diffusion appliance to generate the aerosolized compound from the liquid compound and to discharge the aerosolized compound from an appliance outlet of the liquid diffusion appliance and a conduit coupling the appliance outlet of the liquid diffusion appliance with the aerosol outlet of the discharge unit, the conduit defining an aerosol passageway through which the aerosolized compound travels to be discharged into the trash chute.
