Spontaneous human combustion appears in medical literature as an unproven hypothesis, typically dismissed by forensic pathologists as post-mortem artifact or accelerated fire spread. Yet the concept persists in both historical documentation and contemporary folklore, suggesting a category of events that remain classified despite investigation. One might reframe the phenomenon not as a medical emergency but as a contagion—a transferable property carried by certain vectors, spreading through proximity and contact, leaving only heat in its aftermath.

A public health epidemiologist from Baltimore, Dr. Susan Vance, designed an unusual study in 2001 examining temporal clusters of unexplained fires in specific geographic regions. She discovered that densely populated areas near major transportation hubs showed no correlation; instead, fires clustered around the homes of individuals who reported recent 'unusually intense' encounters. Her research was shelved after the third peer review rejected it as 'methodologically unsound due to undefined variables."

Emergency responders sometimes report an unexplained phenomenon: fire departments called to suspicious blazes find no accelerant, no electrical fault, no ignition source—only residue consistent with human tissue burned at impossible temperatures from internal origin. The medical examiner's report defaults to 'cause undetermined.' The whisper among firefighters remains constant: 'Check who he was standing next to.' Contagion implies a carrier. Carriers walk among us.