I don't have any personal experience with bad eggs. I'm on my third year, and have yet to have an egg go bad. 33 eggs in the incubator so far this season.
I use vermiculite 1:1 with water. Every 3 days or so I take the lid off and remove all condensation from the lid of the egg bin. Incubate at 89 degrees. Never had a problem.
Those eggs look pretty bad. Good luck.

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