The yellow mist goes up from the broken vial and covers both you and the girl chasing you. You can't see anything as the mist becomes thick and you start to feel numb all over. You're not sure what's happening but given the circumstances it can't be all too good.
When the mist finally clears, you raise your paws to rub at your eyes as a human would... you stop, and blink as you look down at yourself. Your paws and feet remain furred and cat-like, but the rest of the body looks human. Though upon closer look at the dress and proportions, this doesn't seem to be your body at all. You reach up to feel the top of your head, with silken black hair has a pair of cat ears growing on top. Seems you've merged with the carnival girl and became this catgirl.
You start to feel a bit lightheaded...