Yesterday, I asked the difference between at and from following the adjective relieved. I was met with a great answer describing the differences between the prepositions following that particular adjective.
I now know this example is grammatically correct:
I was relieved at the news that my grandmother's surgery was successful.
However, I'm still confused as to what the differences between the two are after different adjectives. Consider the following sentences (I don't know if these are correct or not -- I'm only basing them off what sounds the best to my ears):
I became hungry at the smell of the cookies.
I was exhausted from working all day.
I got excited at the sight of her face.
I'm broke from having spent all my money at the bar.
I know there are better ways to word these examples with altogether different prepositions, but I'm trying to understand these particular two.