You can put it in a separate little tupperware container so that it does not contaminate the other eggs if it is rotten. I did that with my last lonely Legbar egg before I finally decided to toss it. It did not explode, but he embryo had died and ti was starting to rot.Yay! I'll let it stew a bit.There may be a couple others from the darker eggs. I had thought that I had managed to miss drying a couple and dabbed the clear fluid (water? albumin?), then this one continued to seep - letting it dry on there is when it hardened and turned slightly yellow. Hopefully, if there is another, I can identify it before it's too late!![]()