Letting someone else get you down

Whenever my husband gets in his bad moods (about once ever 3 months) it just ruins my day. I wish I could tune hime out but I just want to be as far away from him as possible. The bad mood has nothing to do with me and isn't directed at me but I'm the kind of person who hates to be around negativity. It's days like this I wish I could leave!

I got cut off midway through my point. I don't know why someone else's bad mood effects me? I shouldn't let it but it does bother me and makes me want to be away from that person. My husband is just frustrated about something he can't control and he's cranky because of it. I hate cranky people and it's making me cranky.
He's better today (friday the 4th) but I'm still a little pissed that he can't suck it up and leave the crankiness at the door. I don't want it it in my house. I have to find a way to let it be his problem solely and not mine in any way!