Abstract: A venting apparatus for venting a particulate and/or odorous airstream indoors. The venting apparatus includes an air-water interaction chamber having an air inlet and an air outlet. A spray nozzle is mounted in the interaction chamber for generating within the chamber a water spray substantially spanning the breadth of a major section of the chamber. The spray cleanses the particulate airstream. The interaction chamber is connected to a condensation chamber which discharges the treated air indoors. The condensation chamber has a relatively large cross-sectional area so that vapor present in the fluid is condensed therefrom. The preferred apparatus includes a deflection plate disposed within the interaction chamber for deflecting and dispersing the water spray to substantially span the chamber in a direction generally transverse to the flow of the airstream thereby ensuring that substantially all of the airstream interacts with the water spray.