hello love!
i know when things like this happen for me, i try to do something before i go into work that activates a more neutral response within me. like meditating with an affirmation that i come up with. if it's continuously happening maybe when you get home and have the time/space to think about it, reflect on what it is that doesn't sit well with you. is it their behavior? their attitude? and what aspects of them (which is really a mirror for ourselves) can you send love to? it gets easier when you know you can relate to them because of this shared experience. also the energy clearing technique Maryam speaks about is really cool.
'I release all energy that does not belong to me or serve me
I call back any energy that was lost, stolen, or given away'
~peace and warm wishes~
warmth and peace to you