A system for detecting concentrations of chemical compounds in the air of an aircraft cabin, the system comprising a cabin management system and a plurality of sensors (27a to 27d, 29, 31a to 31f, 33a, 33b), wherein the cabin management system comprises a processing unit and a user interface and wherein each sensor (27a to 27d, 29, 31a to 31f, 33a, 33b) of the plurality of sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) is connected to the processing unit of the cabin management system such that data can be transmitted from each sensor (27a to 27d, 29, 31a to 31f, 33a, 33b) of the plurality of sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) to the processing unit, that each sensor (27a to 27d, 29, 31a to 31f, 33a, 33b) of the plurality of sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) is adapted to determine a presence of a first chemical compound in the air of an aircraft cabin and transmit data indicative of the determined presence of the first chemical compound to the processing unit and that the processing unit is adapted to process data indicative of the presence of the first chemical compound received from a sensor (27a to 27d, 29, 31a to 31f, 33a, 33b) of the plurality of sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) and to signal a user via the user interface if data indicative of the presence of the first chemical compound has been processed by the processing unit, that each sensor (27a to 27d, 29, 31a to 31f, 33a, 33b) of the plurality of sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) is adapted to determine a presence of a second chemical compound in the air of the aircraft cabin and to transmit data indicative of the determined presence of the second chemical compound to the processing unit, wherein the second chemical compound is different from the first chemical compound, characterised in that the processing unit is adapted to process data indicative of the presence of the second chemical compound received from a sensor of the plurality of sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) and to signal a user via the user interface only if data indicative of the presence of the first chemical compound and data indicative of the presence of the second chemical compound have been processed by the processing unit, that the system comprises at least two sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) which are arranged in different locations and wherein the first location is spaced apart from the second location, and that the processing unit is adapted to signal a user via the user interface if data indicative of the presence of the first chemical compound has been transmitted by one of the sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) and data indicative of the presence of the second chemical compound has been transmitted by another one of the sensors (27a to 27d, 29, 31a to 31f, 33a, 33b). wherein the cabin management system comprises a processing unit and a user interface and wherein each sensor (27a to 27d, 29, 31a to 31f, 33a, 33b) of the plurality of sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) is connected to the processing unit of the cabin management system such that data can be transmitted from each sensor (27a to 27d, 29, 31a to 31f, 33a, 33b) of the plurality of sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) to the processing unit, that each sensor (27a to 27d, 29, 31a to 31f, 33a, 33b) of the plurality of sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) is adapted to determine a presence of a first chemical compound in the air of an aircraft cabin and transmit data indicative of the determined presence of the first chemical compound to the processing unit and that the processing unit is adapted to process data indicative of the presence of the first chemical compound received from a sensor (27a to 27d, 29, 31a to 31f, 33a, 33b) of the plurality of sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) and to signal a user via the user interface if data indicative of the presence of the first chemical compound has been processed by the processing unit, that each sensor (27a to 27d, 29, 31a to 31f, 33a, 33b) of the plurality of sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) is adapted to determine a presence of a second chemical compound in the air of the aircraft cabin and to transmit data indicative of the determined presence of the second chemical compound to the processing unit, wherein the second chemical compound is different from the first chemical compound, characterised in that the processing unit is adapted to process data indicative of the presence of the second chemical compound received from a sensor of the plurality of sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) and to signal a user via the user interface only if data indicative of the presence of the first chemical compound and data indicative of the presence of the second chemical compound have been processed by the processing unit, that the system comprises at least two sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) which are arranged in different locations and wherein the first location is spaced apart from the second location, and that the processing unit is adapted to signal a user via the user interface if data indicative of the presence of the first chemical compound has been transmitted by one of the sensors (27a to 27d, 29, 31a to 31f, 33a, 33b) and data indicative of the presence of the second chemical compound has been transmitted by another one of the sensors (27a to 27d, 29, 31a to 31f, 33a, 33b).