Cork is often harvested from the cork oak (Quercus suber) and stored in slabs in a hot and humid environment until covered in mold. Cork workers may be exposed to organic dusts in this process, leading to this disease.
^ abMorell, F.; Roger, A.; Cruz, M. J.; Muñoz, X.; Rodrigo, M. J. (2003). "Suberosis: Clinical study and new etiologic agents in a series of eight patients". Chest124 (3): 1145–1152. doi:10.1378/chest.124.3.1145. PMID12970049.edit