Did you ever unknowingly offend a coworker?

I think my coworker hates me. He is not his usual warm and relaxed self around me but very cold, stiff and avoids eye contact or gives me cold stares. I rarely interact with him and never talked shit about him so I don’t know why he would dislike me. He is not a petty kind of person at all. Did you ever experience something similar and did you find out what it was?

Did you ever unknowingly offend a coworker?
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