Although the relations of smell with the built space remain little explored in the contempo-rary scientific world, numerous artists use it today. Their experiments, putting on stage the odors in built en-vironments, test the properties of smell itself, in a sometimes-renewed implementation. They question simul-taneously the frames of our social and esthetic standards. A directory of olfactory effects allows for the un-derstanding of phenomena, between the physic-chemical, sociocultural, individual worlds, active in the olfac-tory artistic actions. However, these deciphering sometimes reveal gaps, mysteries, which are as many leads to be explored to enrich this olfactory effects directory or to direct new strategies of research.