The well known story of Rebbe, Rav Chiya and the garlic is understood by the ????”? as precedent for the ???? that even ?????? ????? ???? ????? so as not to embarrass another person.
Switch shuls if you need to, but by no means humiliate another person – even if he did the wrong thing.
As with most minor annoyances, if you work to develop a positive relationship with this person you will find that these problems won’t bother you nearly as much, and perhaps not at all.
In general, it’s worth noting that the more accepting you are of other people’s bothersome and inconsiderate conduct, the better off you will be. Nobody benefits from tolerance more than its practitioner.