Not eating treats

my cat used to inhale any treat I gave her.
I'd even leave some hidden around the house and within a few hours, she'd found them all.

last week or so, she doesn't eat any treats, hard or soft.
took her to the vet, he didn't see anything wrong.

any ideas?

My Molasses was like that. He use to follow me all over the house for his treats. I give them some treats after their dinner and Molasses use to always follow me around if I forgot. Now I give the other guys their treats he doesn't bother with them anymore. I think sometimes their tastes change.

That's not necessarily a bad thing. Many treats are high calorie, so perhaps your kitty decided to lose a little weight! LOL My cats' tastes are constantly changing!

true but I do miss having something to bribe her with, or reward her with after she does something good.

Maybe try a different flavor or brand of treat? I know cats can get picky about food out of nowhere sometimes, and just decide one day they don't like this one anymore. If you fed soft tuna flavor treats, maybe try the crunchy chicken flavor ones, for example.