Cat Repellent

I have discovered a new cat repellent. Yes, I love Stormy and all but he can get a little pushy and domineering when I am trying to use my laptop, stomping all over the table, pushing up against me, my arms, my face, etc. The repellent - a Sharpie marker. All I have to do is take the cap off and he is GONE. I don't put it in or near his face or anything, apparently his nose is that senstive that he can smell it as soon as the cap comes off.