Dr. Elizabeth Yuko is a bioethicist and adjunct professor of ethics at Fordham University. She has written for The New York Times, The Washington Post, The Atlantic, Rolling Stone, CNN & Playboy.

Even if we do laundry almost every day, it’s easy to forget that the washing machine itself needs regular cleaning, too. Detergent residue, lint, and even mold can build up inside, creating odor and ...