Just a few words about this video.
I love olives. My human once caught me licking olives on her table. Ooops. The good part is that she decided to give me one as a treat from time to time. She DID ask two vets if it was okay and they said it was if I get only one once in a while (also check here and here).
Olives have a stronger effect on me than catnip. I love to smell them and if the olive smells very good and my human is keeping it too long between her fingers, I can bite the fingers to get it (olive effect). The good thing with olives is that it can also be used as a toy! Most of the time I just eat part of it after playing.
Not all cats love olives though. Grouik and Milou for example couldn’t care less. So, use your good judgement, humans.