I love in Dune how there’s a whole elaborate (and elaborated!) system that covers poisonings between the Great Houses.
Rules of war for who you can and can’t poison, “poison snooper” devices that you have at your place setting like utensils, specific words for poison in food vs drink (chaumas vs. chaumurky, also called “murky” or “musky”!)…
…and then like one dude in the entire book gets poisoned with chaumurky and it’s one item on a list of 4 or 5 things the Atreides are dealing with.













