Facade............

 A question.....Is one being phony if you are being polite/professional even when feeling annoyed with your co-workers? I truly like and get along with all the people I work with. Unfortunately there are a few personality conflicts among certain people in the department and it sometimes gets uncomfortable.  I somehow became known as the "peacekeeper" of the lab.  I get really aggravated when I get interrupted by the ones who really dislike one another and tell me what the other did or said.  I don't want to hear it & frankly it distracts me & pisses me off. We work very closely and depend on one another to keep things running smoothly. People need to learn how to at least tolerate one another.  We have a huge workload & need to get results completed in a timely fashion.  People always tell me "You're such a sweetheart" or my favorite, "A breath of fresh air" when I really am not feeling nice or polite and I feel guilty.  Is it being phony when you are being polite on the job because you need to act professional when you really want to tell people off even though you like them? I hate to think I am since it's a characteristic I totally despise.  Opinions greatly appreciated!