At the end of the story, when Montresor explains the last moment of his revenge on Fortunato, he feels sick of what he has done.
As the story ends, Montresor remarks: This brief statement shows that Montresor regrets what he has done, further supporting the fact that he will never be able to overcome the crimes he has committed.
Most likely a combination of the humidity in the tunnel and the saltpeter or potassium nitrate in the air. He doesn't feel bad about what he did to Fortunato.
Fortunato, for example, thinks he and Montresor are friends, and probably once. But according to Montresor, Fortunato also knows that he is "rich, respected, admired, loved" and happy.
Learn more about Montresor at
https://brainly.com/question/1341370
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