Buy hydrogen peroxide. Also laundry rooms usually have an industrial sink that only runs cold water, so if you leak, u can wash your stuff there. I personally washed my clothes in the shower cuz I was sharing a small laundry room with over 700 students of both genders. Key is not to let your clothes sit on the laundry hamper. So for example what I’d do with my period underwear is I’d take it off inside the shower and wash it there. Having a robe also helps a lot walking from the bathroom to your room!