I tend to think that the yellow is from a combination of yolk and infection so from reproductive malfunction and the clear fluid could be from heart failure as in broilers. In my opinion, natural remedies are of limited benefit, at least for reproductive malfunctions like egg yolk peritonitis/internal laying. I do think they can be part and parcel of keeping immune systems functioning at peak levels. Internal laying is genetic/hormone based. And of course, cancer in laying hens is so common, at least in the more productive ones, I'm don't think there is anything you can do other than keep their immune systems as good as you can after you start with good quality stock in the first place. Part of that may be feeding turmeric regularly.
I was told by a PhD in poultry science that I consulted when all this was happening years ago to get my stock from another source and begin feeding them all turmeric in their feed, so that's one thing you can do. He said it has anti-cancer properties, which you probably already know.