She has an 'appetite for' adventure. [=she likes adventure; she likes to do adventurous things]
That movie made me 'lose my appetite'. [=I no longer wanted to eat after seeing that movie]
Delicious smells from the kitchen 'whetted our appetites'. [=made us hungry]
(..) every day. Oh, she's fierce when she nurses. I'm covered in bruises. Nate had a big appetite. Is she gassy? No, not overly so, but she's always hungry. That's because she knows she doesn't have much time. (..)2005 TvShow: Six Feet Under Title: Everyone's Waiting Season: 5 Episode 12