| abstract |
A system for dispensing fluid in response to a sensed property such as an ambient sound comprises a sensor ( 2 ) for detecting one or more properties, a processing stage for determining if the one or more sensed properties is/are within a predetermined range and/or above and/or below a predetermined level and dispenser ( 6 ) for dispensing a fluid into an area surrounding the system if the one or more sensed properties is/are determined by the processing stage to be within a predetermined range and/or above and/or below a predetermined level and/or value. |