I picked up my black sex link rooster this morning and noticed some yellowish stuff on the back end of his comb. It was wet and I suspected pus so carried him in the house to get a kleenex. As I started dabbing at it, more came out. I wiped it up but know he must have an infection there. It smelled pretty bad too. He is healthy otherwise. The back end of his comb is somewhat convoluted and the pus was coming from the crevices on each side. Not sure if that is from an ongoing infection I didn't see before? What should I do to treat this? He is about 6 months old.