hi! i've heard of people sniffing eggs to see if they're bad. i just set about 38 eggs in the bator a couple days ago. now there is a very faint smell in the bator. but it's so faint, it could be in my mind...but at the same time, i've never smelled this smell in my bator before. so.....to sniff an egg, will you be able to tell which one is bad just by sniffing? i'm wondering if the smell will rub off on the other eggs and a few of them may smell bad even if they arnt simply cuz they were a neighbor of the bad egg? also, all but 4 of these eggs are dark brown and olive eggs...so candling isn't easy, especially in the early days. is it safe to leave them for a few days till the smell gets worse or what? i certainly don't want an exploding egg!