Explicitly, Cudjo is saying that the murderer can’t live long amid the stench of death. More figuratively, he’s explaining that the policies of the tribe are so strict because no one wants to live among a morally “rotten” man. The community’s deadly serious approach to justice contrasts to Cudjo’s experience in America, where even after liberation he will have to live among men like the Meaher brothers, who have committed grave moral offenses without punishment.