Air treatment systems and methods

An installation method, comprising:

• mounting an aerosol discharge unit to a fire door arrangement provided at a terminal end of a trash chute, the aerosol discharge unit having an aerosol outlet that is in fluid communication with a trash passageway of the trash chute;
• mounting a liquid diffusion appliance 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 an aerosolized compound from the liquid compound and to discharge the aerosolized compound from an appliance outlet of the liquid diffusion appliance;
• and
• coupling the appliance outlet of the liquid diffusion appliance to the aerosol outlet of the aerosol discharge unit via a conduit to enable the aerosolized compound to be generated by the remotely located liquid diffusion appliance and discharged into the trash passageway of the trash chute.

A kit for positioning a liquid diffusion appliance remote from a trash chute to be treated by an aerosolized compound generated by the liquid diffusion appliance, the kit comprising:

• a multi-piece aerosol discharge unit including a base part and a separate nozzle part removably coupleable to the base part,
• wherein the nozzle part comprises a main body having a stem projecting from one side of the main body which includes an aerosol outlet, a fitting projecting from another side of the main body opposite the stem, and engagement features for removably coupling to corresponding features of the base part,
• wherein the base part includes an aperture through which the stem of the nozzle part extends for positioning the aerosol outlet in a position to discharge the aerosolized compound generated by the liquid diffusion appliance into the trash chute;
• and
• a conduit for coupling the liquid diffusion appliance to the aerosol discharge unit.