All's Fair - S2-E18
Revealing mistake: In the scene where Don and the FBI crew is investigating the body of the Iranian victim, a split second closeup on the head of the Iranian woman shows she is breathing even though she's been dead for an hour already. (00:04:00)
Answer: It takes 24-48 hours before a decaying body begins producing a decaying odor. It takes a number of days for it to intensify enough to be immediately noticeable when walking into a room.
raywest ★