My rooster has a very folded comb, in the crease he has smelly yellow....well gunk. I have cleaned it out and it seems a little better but it continues to come back. Any ideas what it could be? Is it just from moisture getting in there and it not being able to dry? Any help is greatly appreciated! This is what his comb looks like naturally, you can see how much it folds over above his beak. When I stretch it you can see all the yuck in there. Other side, not as bad but also in a crease.