Theodor von Dusch (17 September 1824 – 13 January 1890) was a German physician who was a native of Karlsruhe. He was the son of Baden statesman Alexander von Dusch (1789-1876).
In the 1850s, with Heinrich G. F. Schröder (1810-1885), he demonstrated that a filter made of cotton-wool was effective in removing microbes such as bacteria from air.[1][2] Dusch was the author of influential works involving thrombosis of cerebral sinuses ("On thrombosis of the cerebral sinuses"; translated into English in 1861), heart disease ("Lehrbuch der Herzkrankheiten") and diseases of the endocardium and myocardium ("Die Krankheiten des Myocardium" and "Die Krankheiten des Endocardium"). The latter works were included in Carl Gerhardt's "Handbuch der Kinderkrankheiten" (Textbook of Childhood Diseases).[3][4]