Odour emissions from various sources are of increasing concern to the public. Considering areal sources, there is need for the development of reliable methods for the measurement of odour emissions because none is yet accepted as a standard. In this work, a wind tunnel was first developed as a tool to measure odour emission from areal sources. A laboratory study on concentrations above the liquid surface was carried out to characterise the emission. Edge and fetch influence was shown as well as the presence of concentration gradients. Then, a dynamic flux chamber was developed as a sampling emission rate system. Tests in the wind tunnel showed good accuracy and precision.