Do you have a colleague that you hate? and why?

Do you have a colleague that you hate? and why?

I have one that I don't like. He is a Know it all. One day he talked to me and I told him plainly that I don't like him.

How do you deal with yours? Because we are now paired to work on a project and I smell disaster.

Do you have a colleague that you hate? and why?
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