Romans used to use the ammonia in urine to clean sweat and salt off of clothes, and then a second round of sulphur would whiten the urine color off of the cloth

Romans used to use the ammonia in urine to clean sweat and salt off of clothes, and then a second round of sulphur would whiten the urine color off of the clothes. You'd have to have your clothes airing out for a year to get the stench out.