Stench trap, comprising: - a housing with at least a first and a second mutually adjacent vertical chambers, wherein the two chambers (82, 83) are in liquid contact with each other on the underside; - an outlet opening; - a first inlet opening arranged in the upper wall of the second chamber; - a second inlet opening arranged in the underside of the second chamber; - a tubular insertion part which is configured to be placed sealingly and slidably in the first or in the second inlet opening (89, 90); - a third vertical chamber adjacent to the first vertical chamber, the third vertical chamber having the outlet opening arranged at the top and in a side wall of the third chamber, wherein the third chamber is in liquid contact with the first chamber at the underside, wherein the first and second chambers (82, 83) are also in liquid contact with each other on the top side - a plug which is configured to be arranged in one of the two inlet openings (89, 90) of the second chamber; and - a sleeve which is configured to be arranged in the other inlet opening (89, 90) of the second chamber, wherein the tubular insertion part is placed sealingly and slidably in the sleeve, wherein the sleeve, when placed in one of the two inlet openings (89, 90), closes the nearby liquid connection between the first and second chambers (82, 83), - wherein the stench trap can be installed in a first position, in which first position the tubular insertion part with the sleeve is placed in the first inlet opening and the plug is placed in the second inlet opening, and - wherein the stench trap can be installed in a second position, in which second position the tubular insertion part with the sleeve is placed in the second inlet opening and the plug is placed in the first inlet opening. - a housing with at least a first and a second mutually adjacent vertical chambers, wherein the two chambers (82, 83) are in liquid contact with each other on the underside; - an outlet opening; - a first inlet opening arranged in the upper wall of the second chamber; - a second inlet opening arranged in the underside of the second chamber; - a tubular insertion part which is configured to be placed sealingly and slidably in the first or in the second inlet opening (89, 90); - a third vertical chamber adjacent to the first vertical chamber, the third vertical chamber having the outlet opening arranged at the top and in a side wall of the third chamber, wherein the third chamber is in liquid contact with the first chamber at the underside, wherein the first and second chambers (82, 83) are also in liquid contact with each other on the top side - a plug which is configured to be arranged in one of the two inlet openings (89, 90) of the second chamber; and - a sleeve which is configured to be arranged in the other inlet opening (89, 90) of the second chamber, wherein the tubular insertion part is placed sealingly and slidably in the sleeve, wherein the sleeve, when placed in one of the two inlet openings (89, 90), closes the nearby liquid connection between the first and second chambers (82, 83), - wherein the stench trap can be installed in a first position, in which first position the tubular insertion part with the sleeve is placed in the first inlet opening and the plug is placed in the second inlet opening, and - wherein the stench trap can be installed in a second position, in which second position the tubular insertion part with the sleeve is placed in the second inlet opening and the plug is placed in the first inlet opening.