I am a historian whose specialty is too recent to deal with anything like that (20th century), but also have a friend who, to be generic here, deals with a handful of a few centuries back. She found a baggie of a drug mistakenly stored with a letter in an archive (think 18th century) and on a whim, dipped their pinky into the powder and tried it. They regret that decision, but also, nothing happened:)
EDIT: Historians can be boring, but not always that tame