After the latest fix with changing the exhaust to make the flow towards down, there is a big deference but the smell still there.
i did some additional sealing on the back door to make sure there is no leaking point but also the smell is there.
i believe the smell also finds a way to leak inside from the front " fresh air intake"
since the cat converters is located right next to the engine i think they are our main issue.
i have noticed after every long drive when i go out of the car i immediately smell the same smell from the sides, if i come closer to the front tiers the smell gets stronger. which prove it's a cat converters issue.
i don't know why ford designers put the cat converters is such location , should be right beneath the car like most of the cars, easy to change also will not cause extra heat to the engine room.
i think the best way to fix this issue to change the entire exhaust system from the engine to the end back and relocate the cats to be beneath the car.
also ford needs to check the front a\c fresh air intake this is also may cause the issue.