<human>: Give me the gist of the text in a nutshell

I've posted here before about our rescue, Momo.  For the most part, things have been going great.

We have a new issue, though.  Recently my SO and I got into a fight.  It was pretty serious and involved some yelling on both ends.  Momo doesn't like yelling, or play-fighting even and will try to make us stop.  My SO and I have gotten through the issues, but ever since (about a week now) Momo will bark at him (and sometimes me, but not so often) even when he's just standing there or makes gestures.  My SO never went to hit me, and he only raises his voice when we are talking about something that annoys us, like sports or something.  Sometimes he won't even have his voiced raised and it's just us talking. 

Momo just starts barking like crazy and we can't get him to calm down.  We even give him treats when he stops but I'm not sure where to go from here.  Any ideas?
<bot>: SO and I got in fight, yelled at each other, now dog barks at us when we seem even a little upset and sometimes even when we have a normal situation.  Help?