I have just received some shipped eggs from a well known auction site. I went to set them tonight and my wife dropped two of them. When they broke the contents were a mustard colour and the smell was like a stink bomb. We have now got all the windows open to try to clear the smell! These eggs were sold as fresh, fertile Rhode Island Reds. We know the fertility can change when they go through the post, but these eggs were not fresh! What is your guess of how old they are?