Question on Egg mold

[CDN-Cresties]

Hey everyone, this is most likely a dumb @$$ question but ill ask anyway. What are some signs that an egg is going bad?
Thanks in advance :)

-Steve-

[Wuntu Menny]

Yes, mold growth is a possible indicator of a bad egg. Why look, there's mold growing on me right now!

Usually infertiles will start to stank and turn yellow within a day or two of being laid. Mold isn't a definite however, if there are a lot of spores floating around your house and your incubator gets opened a lot, mold will set up shop on perfectly healthy eggs. Let me tell you, it SUX having to physically pick mold out until the eggs hatch.

WM