John Snow’s Pump Handle

Origin
John Snow was a physician who promoted the practice of anesthesia and hygiene and is considered the founder of epidemiology, the study of the cause and spread of diseases.

When a cholera outbreak happened in Soho, London in 1854, it infected and killed six Warehouse 12 agents. The Warehouse then contacted Snow, who found the source and helped change the water system in London and other cities. The pump handle, along with his dot map, were some of the few artifacts voluntarily given to the Warehouse.

Effects
When it touches a source of water, it infects the supply with cholera. It is a strain resistant to modern day antibiotics with no known cure.