Hello goodnight, i would like to know it normal for the surgery i did on my navel last year to be scarring?...and also why does it always smell like poop??

Side effect?: Was the surgery for umbilical hernia? If dermis, deeper later of skin is cut during surgery, during healing process, body makes new collagen fibers which cause scarring after initial healing. To improve the appearance you can use Vitamin E oil, cocoa butter cream, Vaseline or Aquaphor, listed most effective first. See your surgeon, a bowel loop may be attached by fibrosis causing smell.