I never show emotion around strangers, or anyone I don't know well. I reserve that for family, mostly. To me, it's like explaining your dreams to someone: it bores the listener to sleep.
So in public I'm fairly emotionally neutral , but this makes me seem arrogant and condescending to all the EST's around this office.
So it's a catch 22. Show emotion - you're an unreliable whiner, don't show emotion, you think you're too good for us.
But i don't mind. You can't control what other people think or their level of awareness, so I withdraw and let them think whatever they want in their particular frame of reference.