My wife has a big problem if she can hear me eat, but I think that's more about me than about her. But there are people (like you, maybe?) that cannot stand to hear the sound of anyone chewing. If this describes you, you could have a condition called "Misophonia." In addition to the video, an article from Ranker offers a lot of detail about it. Of course, you may not have Misophonia. You may just be married to someone like me.