My 2018 just within the last month has started having a mildew smell in the cabin after it rains. There is zero wet carpeting. Just the smell. I cahnged out the cabin air filter, but that didn't help. I did a search, but all I could find are posts where peoplr had wet carpet in thre cabin. Any help would be a preciated. One person as said the cabin vent, the one for when you shut doors to equalize the pressure on his ford F150 had become dislodged and leaking. I can't find that vent. He also said he had wet carpeting. He and I searched my truck today for any wet carpet and the was none. We had rain last night.