I still think Cesar may have actually burned Maria's body twice after he killed her. The neighbor stated that he borrowed a shovel from him on the 15th or 16th of December...and he also stated he noticed him burning in the backyard during that time frame...so if he had buried her deep enough in the ground, I believe the odor wouldn't be obviously detectable as she would have had alot of dirt piled on top of her body. It's also very cold in December in North Carolina so that I believe would help in not allowing the odor to become stagnant and lingering around the area. Then when they had the bon fire on Christmas Eve...I don't think Maria's body had decomposed to the point where an odor would be very noticeable..the weather helped alot and also the dirt piled on top of her..those two factors helped in preserving her corpse...the bonfire however is when Maria's body actually began to char and burn to the point of affecting her organs, etc....and with the huge amount of charcoal he is said to have purchased, I believe an odor of a burned body could/would be disguised and not telling of a dead body burning. It's obvious that no-one nearby smelled a typical dead body burning odor or it would have been reported to police.