The inventive device for gas odorising comprises a diaphragm arranged in a main pipe and a positive chamber formed thereby which is connected with an underground tank containing an odoriser, a service tank which contains said odoriser and is connected to said underground tank and the main pipe, and gas supply pipe socket which is arranged in the service tank and supplies the gas thereto from the positive chamber. The pipe socket is arranged in the service tank above the odoriser and oriented by the output orifice thereof towards said odoriser.In other variants of the device embodiment, the gas supply pipe socket is provided with an output tube in the form of a nozzle and embodied in such a way that it can change the position thereof above the odoriser level. A gas splitter is arranged in the service chamber in such a way that it is sunk.
