" It will not kill me. I shall not die of a cough."
When Montresor and Forunato have a drink, Montresor says that he's drinking to Fortunato's long life. This is an example of verbal irony because of course Montresor doesn't mean what he says since he has a plan to kill Montresor.
The story is set during Carnival time which is ironic because usually, this time of year is happy and bright but in reality, Fortunato was actually being lured into a trap which would get him killed.
" Yes, yes"
" You are not one of the Masons."
The fact that Fortunato says that his cough will not be the thing that kills him is ironic since Montresor is going to kill him. Also by that time the audience can tell that Montresor has some kind of trick up his sleeve to hurt or kill Fortunato.
He loves wine far too much to turn down Amantillado
Montresor's family motto was that "nobody attacks me without punishment" and Fortunato thought it was a good motto. When Montresor told Fortunato the motto it foreshadowed that Fortunato was in some kind of trouble especially since Montresor seemed very on edge in previous paragraphs.
" Nemo me impune lacessit"
Fortunato didn't believe that Montresor was a Mason so Montresor pulled out a trowel from beneath his robe and showed it to him as proof. This foreshadowed that Montresor's plan to kill Fortunato had something to do with digging or being buried alive.
Montresor's love for wine got the best of him in this story since that was the reason he agreed to go with Montresor. Also, the fact that he was dressed up as a jester foreshadowed that Montresor wasn't the brightest person and could be easily tricked.