.......damp smell in X5 after rain..........

[Tominizer]

Find, especially if it rains and the X5 sits out overnite, the next morning there's a weird dank smell in the cabin. I haven't found any leaks that are showing up, although who knows what's happening under the carpet due to the thickness of the foam............... maybe a drain hosing the underside of the carpet ??!?!??! But can't find any obvious leagage anywhere.

Any thoughts ??