If you want to keep your cat from certain area in your home – you can use orange essential oil or orange-scented cleaners. Oranges will keep your cat away!
Cats shoulnd't eat oranges. Essential oils from an orange are metabolized in the liver, and cats don’t metabolize these oils in the way we do. So, oranges might be toxic for cats.
Generally speaking, you can let your cat smell an orange. But, you shouldn’t force her to do this. You can let her smell it, but you shouldn’t let her eat it.