This paper presents and discusses the results of the project named ‘Jasmin’ implemented in Algiers to control the strong odours of the river named Oued El Harrach, one of the largest rivers in the centre of the city. Pending the achievement of curative solutions, a temporary option for mitigation of nuisance odour by masking agents was implemented in the vicinity of the main bridges. The efficiency of this technology has been followed by means of an odour panel with the participation of representatives of all stakeholders. A sociological study by means of 1,000 questionnaires and face-to-face interviews of the local population demonstrated the benefits and the positive outcomes of the attenuation of odour nuisance: 70% of the surveyed population is satisfied or very satisfied with the application of masking agents and 96% of respondents support the continuation of the project. In terms of size and public access, the project Jasmin is a world-first demonstration of odour control in urban areas in developing countries.

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