Luft closet

Luftklosett, or luft-closet, luftpunkte (German Luftkloß - air toilet or oral German. Lüftklosett - literally German "air closet", an outdated name, from German. Luft - air and German Kloß - chair) - a device for flushing waste in places where there is no connection to the sewerage system. These devices were used during World War II,