How do you get UN-grossed out?

My dog was in an accident, and is now healing, but has a large infected area of skin, that smells so bad whenever I catch a whiff of it, I feel like I'm going to throw up! And I saw it today, and there's just skin falling off of him.. it's so gross, that I can't stop thinking about it, and I have had like no appetite for 3 days, since it happened to him. He has to stay in our bathroom, so I can't even use my own bathroom, I have to go next door, and I'm pregnant, so my nose is extra sensitive.. How do you STOP thinking about something you want to stop thinking about? Also my cat killed a mouse and brought it in my house an hour ago, and that made my gross-out-factor even worse!