Well at day 61 they are past the point that most eggs would be pipping. All our clutches pip around day 54-56 . I would go ahead and cut the rest. The one egg that smells bad is most likely dead. A fowl smell is never a good thing. Candle the others before you cut and see if they have good veins. That will give you a good idea of if they are still alive. Hope the rest of the eggs turn out better. Good luck.