My chinchilla's cage is located right next to the laundry room. (He's lived in the same spot for 3/4 years and counting)There is a door between and whenever the laundry's on, we close the door. I also let my chinchilla out in the laundry room all the time. He likes to go in the laundry basket and even behind the washing machines (I dont let him but he still does). There's a huge window in the laundry room leading to the backyard which I open only during the night and all of the detergents are on top of the washing machine. There was a time when my chinchilla lived across the U.S in a basement (it also had a washing machine and dryer with no doors; his cage was the farthest part away from the washing machine in a corner) and I made sure every single window was open. Ventilation is super important to keep the smell out of all the detergent and chemical stuff, and for fresh air, and doors or something to keep out the sound of the washing machine.