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I have a work colleague I sit next to whom I suspect to be an alcoholic. Certainly other colleagues have expressed this opinion. It used to be that occasionally he would come in smelling of stale beer from the night before, but recently it has been every day. The smell is unpleasant and sometimes makes me feel ill. Should I approach someone at work about this? I have nothing personal against the guy and find he is a useful to talk to and I wouldn't want to get him into trouble, but the smell is becoming difficult to put up with.