Declassified MI5 files released on Monday detailed strategies the Nazis used to attempt to poison Allied commanders.
Female agents hid microbes in handbag mirrors, The Telegraph reported, citing documents from the interrogation of four German agents who parachuted into France in 1945.
The agents also carried cigarettes that caused headaches. Once an Allied soldier would smoke the cigarettes, the Germans would give them Bayer's aspirin tablets that were laced with poison. They also carried poisoned coffee and chocolate.