Bubbles on egg what do I do ??? ( HELP )

[nitro_786]

Hi I’ve got grey francolin eggs in the incubator and they usually take around 25 days currently I’m on the 24th day and yesterday I seen there is bubbles starting to occur on 1 egg and I was just wondering should I leave it now because it’s close to the hatch day and also why does this bubbling happen ???


Thanks.

 

[nuthatched]

It's rotten and oozing out, throw the egg away before it explodes.