Please stop feeding her all that greasy food- Pancreatitis!
Are you willing to try raw?
If not get a good quality dry... Lamb and Rice.
Put it down for five minutes and then take it up.
No more human food.
My male liked to graze all day long so we just left his food down.
Sometimes they just get weird and silly. My boy did that at about the same age. Even birds scared him. I mostly ignored him and started talking to him during our walks. He never got over skateboards though.
Try taking some treats with you on walks and every once in a while give him one- not when he us freaking out.
Sniffing will stay- it’s a dog thing.