I live with someone like this and have done for over 10 years. He rarely snaps over the housework but he does about other things. Unless he's out of the house I never feel truly able to relax. I'm jumpy and nervous quite often. It can be upsetting and confusing too. I might say something I think is perfectly ordinary and reasonable and get snapped at in return.
And now he does it to our five year old. If he's working or doing something on his phone and she asks him a question or asks for a drink etc, he will ignore her. She will ask again (and maybe again and again, because he's ignoring her and she is five years old), and then he will snap.
I'm more at the opposite end of the spectrum and very rarely lose my cool, though it does happen occasionally. I think occasionally is ok though. But all the time, and never knowing what might set it off is an absolute nightmare to live with.
And they're always worse when you move in and they further worsen with every further binding (engaged, married, pregnant, children).
I think this is true. I can't say for all as I moved in with him very quickly to get away from home, and we never got married, but things definitely got worse after our dd was born. And my unqualified opinion is that having a bad temper like this, is part of a controlling personality. It works because if you want an easy life and don't want to be shouted at, you will start modifying your behaviour to fit in line with what the angry person wants. It's not a way to live and if it's something you can get away from, then do.