The odorology or science of smells is a technology used mainly in criminology for judicial identification. The technology is based on the analysis of smells by dogs notably to merge the criminals or to identify the smell of objects (explosives, drugs).
History
Olfaction of dogs is used for a long time by the police (location of drug, of explosives, of weapon, body of missing persons, criminals' identification) or the services of rescue (bodies buried under avalanches). From 1910, a dog handler Friedo Schmidt describes in his book Verbrecherspur und Polizeihund («The criminal links and the police dog») how smells left by a criminal on a crime scene can be stocked in glassy jars for identification for purposes.
The dog's olfaction, as criminalistics technology, developed thanks to works of a Hungarian doctor in 1970s in countries of Eastern Europe during Cold War, notably to identify dissidents.