How does fortunatos cough add to the eerie mood?

Fortunato's cough adds to the eerie mood of the story in several ways.

* It suggests that he is sick and dying. This is significant because the story is about death and decay, and Fortunato's cough is a reminder of the inevitability of death.

* It makes him seem like a frail and vulnerable old man. This is in contrast to the strong and powerful Montresor, who is young and healthy. This difference in physical strength makes the story even more unsettling, because it suggests that Montresor could easily overpower Fortunato.

* It creates a sense of suspense and unease. Every time Fortunato coughs, the reader is reminded of the danger that he is in. This keeps the reader on edge and makes them wonder what will happen to Fortunato next.

The eerie mood created by Fortunato's cough is essential to the story's atmosphere and meaning. It helps to create a sense of dread and anticipation, and it sets the stage for the horrifying events that are to come.