I'm having the same problem with the timeline, and I too am thinking the only logical explanation for the smell is she moved Caylee's body sometime close to when she ditched her car. No one saw Caylee after George saw them leaving his house the afternoon of the 16th, yet on the 24th he doesn't smell decomp in the car when he finds the gas cans. Wherever Caylee was between the 16th (assuming that's when she died) and the 24th would give plenty of time for her body to decompose a lot, especially in the heat. All I can think of is Casey really does have to have ice in her veins to move her body after that time, put it in the trunk, remove it and put it somewhere else. OMG ~ almost unbelievable to think of!