Dino Kong a perfumer based in Shanghai China has spent numerous winters in Beijing. It is cold dry and dusty which combined with bad traffic makes the air rough in the throat. Additional elements are burning coal and sulphur. He made use of IFF’s Scentemotions research platform which tags perfumery materials with moods and emotions by culture and demographic group. Making use of ingredients tagged ‘musty’ and ‘unhealthy’ he incorporated sulphuric-smelling elements from Cassifix and Tropicalia together with guaiacol for smoke and hay absolute to give a scratchy sensation.