My name is Fortunato so I will most likely be a fortunate person.
Fortunato does not know I don't like him.
Montresor drinks to Fortunato, he hopes he will have a long life, but is planning to kill him later on that evening.
Your right, you won't die from cough.
Fortunato's name means fortunate and Fortunato is not very fortunate
Just because I am dressed as fool doesn't mean that I am one.
Montresor does not like Fortuanto but he does no know that.
"Nemo me inpune lacessit"
Fortunato says, " I shall not die from a cough." Montresor replies, " True--true," This implies that he could be planning something else and makes the reader wary of Montresor.
I shall not die from a cough!
Fortunato is dressed as a fool. This foreshadows that he will be the fool at the end of the story, when he dies.
The family motto foreshadows Fortunato's death. The motto means " nobody attacks me without punishment". Fortunato attacked Montresor when he insulted him. This foreshadows Fortunato being punished for attacking Montresor.