The solution relates to a system (1) for preventing odor nuisance, in particular for a kitchen exhaust system which has at least one air stream inlet (9) for supplying an air stream (10) and at least one air stream outlet (12) for extracting a stream (10). of air. The system (1) further comprises at least one ventilation fan system (11) for sucking and accelerating the air stream (10), the air stream outlet (12) being arranged and oriented relative to some exhaust air stream outlet (8) such that the air stream ( 10) the air accelerates the exhaust air stream (4) exiting the exhaust air stream outlet (8) in the flow direction downstream of the exhaust air stream outlet (8).
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