Mac and Cheese Ruined

Last night I was almost done making a creamy cheesy sauce for homemade macaroni and cheese when I found a package of almost-gone shredded cheddar cheese in the fridge and thought, I'll toss this in too. Right after I dumped it in the smell hit me. The cheese was bad. And it ruined my sauce. Ugh. We ate the noodles with butter. It was sad.