It is said (though not confirmed) that Otto von Bismarck challenged Rudolf Virchow to a duel. As the challenged party had the choice of weapons, Virchow chose two sausages, one of which had been inoculated with cholera. Bismarck is said to have called off the duel at once.

https://coldewey.cc/2009/08/it-is-said-though-not-confirmed-that-otto-von/ ยป