Donald Harvey, a nurse who killed 37 patients, was only caught because the medical examiner who performed the autopsy on one of his victims had the genetic ability to smell cyanide. This prompted an investigation and eventual arrest. – WTF Fun Facts
autopsy
WTF Fun Fact – Bonaparte’s Part
Napoléon Bonaparte’s penis was removed from his dead body during autopsy, displayed at a museum, and eventually sold for $2,700 in the 1970s. – WTF Fun Facts
Source: https://www.independent.co.uk/news/people/napoleon-s-penis-size-confirmed-channel-4-documentary-calls-the-artifact-very-small-9235101.html