This project recollects the smoke of opium in Iranian fictions. It indexes, in the form of written accounts, the instances of opium use in modern and contemporary novels and short stories. This growing archive traces the opium as it is inhaled by the different persona and in the different historical times depicted in these narratives. With the help of ‘functional respiratory imaging’ used in computational predictive pathology a ‘longue durée’ inhalation of opium smoke particles is simulated in 3d animation over a pare of hypothetical lungs. If it is the smoke that binds the lung to the social history of opium, It also makes it a sedimentary organ deposited from the alchemy of the toxin and remedy. This project is about the pathology of the archive, but also about archival futurity.