Gas chromatography-olfactometry
Gas chromatography-olfactometry (GC-O) is a technique that integrates the separation of volatile compounds using a gas chromatograph with the detection of odour using an olfactometer (human assessor). It was first invented and applied in 1964 by Fuller and co-workers.
Source: Wikipedia — Gas chromatography-olfactometry (CC BY-SA 4.0)