Hi, I had a broody chook whose first egg collection was accidentally removed and she continued sitting on eggs as they were laid over a 7 day period (we marked the eggs at that point and removed any extras) This resulted in 4 eggs total. 1 egg hatched and she continued sitting on the others for another 3 days then left the nest. I now have 2 eggs nestled under my bra in the hopes that I can let them finish developing. I have never incubated eggs before but read HEAPS in the last 36 hours including 3 threads on human incubation, 1- attempt to incubate from day 1 was abandoned early but the egg was developing, 2- attempt resulted in failure (not sure of the duration), 3- someone finishing incubation of 2 duck eggs that were abandoned at the end like mine and they hatched without a hitch. I have candled my eggs and they have a largish air cell (about an inch or a bit more in diameter I think) and otherwise opaque which I understand could mean they are due to hatch any day, could be rotten, or may have humidity issues. My light was not terribly bright and the eggs are thick shelled and brown which doesn't help. So I am not holding out much hope for success but needed to at least try. So I am not sure if all will go without a hitch, if my eggs are decaying (one was and I seperated easily based on the smell, the other 2 smelt fine). Anyone have any advice that might help the process? Should I go jogging to up the humidity between my breasts lol. How quickly does an egg start to smell if a developing chick dies?