My 2018 does this as well. I have to pass two sewage treatment plants daily and it is like having a pile of human waste put in my cabin every time. Road kill. Check. Diesel trucks. Check. Constant headaches while driving. Check. I am 49 years old, and have never had any other car or truck do this. in fact, I didn't even know we had the sewage treatment plants near us till I got this truck. This is completely unacceptable.