We have 9 month old 14.7K miles 19 Touring. Out of the blue about 2 weeks ago after having used the Pilot both weekend days, on Monday when my wife went to work she noticed a slight odor in the Pilot. It almost smelled like cooked broccoli or cauliflower. It continued to get worse over the next few days and by Wednesday of that week I had a couple different friends take a sniff to see what they thought is might be. They were unanimous that they thought it was a dead mouse. So on Thursday I called the Honda dealer and scheduled a service for that Saturday, regular service, O/C, cabin and air filter replacement and they would look for signs of a dead animal or mice in the car. Long story short they found nothing. The S/A advised me they thought the smell was originating from the rear cargo area and asked us if we had spilled something there on the carpet by any chance. We stated we had not. He advised we could spend a fortune do exploration and he suggested we put baking soda in the car to try and absorb the smell. So we left and got a couple different products to put in the back of the car that are supposed to absorb odors. A week later and the smell is still pretty awful. So today I spent some time trying to isolate the location and source of the smell. It seemed like it was coming from behind the cover over the car jack. I tried getting that panel off and couldn't so finding instructions here on Piloteers I took the rear seats and cargo panels out and removed the rear driver side rear quarter inside body panel thinking that the smell was coming from behind that. After I got the panel off I realized that the smell was strongest in the frame to the left of the tailgate. Problem is the holes in that frame piece are the size of a quarter at most and looking in I can't see anything and sticking my fingers in can't feel anything. So I called the dealer back today and they are going to try and look down there with a scope on Monday. Anyone ever hear of such a problem locating a horrid smell in a Pilot body panel? We are getting very frustrated. Otherwise we have loved our Pilot experience having taken it on a thousand mile trip and a two thousand mile trip.