Fragrances determine our lives, as the well-known gastronomy and wine expert Guy Bonnefoit writes in his book "Fascination Wine & Flavors": The human skin has a surface area of about two square meters and contains up to 300 odor components. Depending on the physical condition and state of health, the odorous substances also change. A dog can differentiate precisely between people who are well-disposed towards it and those who are anxious about it. Every mood has its own smell - you can therefore smell the state "happy". An experienced country doctor reports that he is able to recognise certain illnesses when entering a sickroom. Every illness develops its typical "smell". Diabetes smells fruity, diphtheria sweetish, typhoid fever like baked bread and gout like lion cages or pet shops.