 It is normal for a white or slightly yellow discharge to be noticeable on the jewellery , as the sebaceous glands produce an oily substance meant to protect and moisturize the wound . While these sebum deposits may be expected for some time , only a small amount of pus , which is a sign of inflammation or infection , should be expected , and only within the initial phase . While sometimes difficult to distinguish , sebum is " more solid and cheeselike and has a distinctive rotten odor " , according to The Piercing Bible . 
