The document discusses several examples of irony in Albert Camus' novel The Plague. It notes that the main irony is how the people of Oran initially think they are free before the plague hits, but then realize they are prisoners when the city is quarantined. Another irony mentioned is that the citizens initially dismiss early plague deaths as normal, but later recognize it as a serious epidemic. A third irony discussed is how the characters seek meaning and purpose during the plague, even though Camus saw human existence as inherently meaningless.