I bought an additional incubator. The instructions that came with it say, first of all besides sanitizing the equipment before and after a batch is incubated, SANITIZE the eggs with the special eggs sanitizers that are on the market, and the third instruction that is significant is on the 18th day all the usual stuff plus do not open the incubator for 24 hours. So if your eggs have not started to pip by then I suppose it is possible to open the lid to mist ?????
Anyway since the eggs were vile from smeared poop I did wash about 6 with hot soap and water and since the most nasty ones are breeds that hold my interest, two of them went rotten. You could smell them through the incubator. The temperature and RH are more stable when the door to the room is kept closed so the nasty smell was bottled up.
So besides being more careful with the RH, I will never again doubt that hatching eggs need to be sanitized. Still don't know about the misting but I am sure that it will not hurt. But when i first started this thread, the artile that I had quoted suggested a complicated reason for misting but I will go over it again. sheesh