Started getting a damp, musty smell in the Murano and couldn't figure out where the smell was coming from. I could not find any moisture anywhere so I took some baking soda and spinkled in on the entire floor board front and back hoping that would get rid of whatever moisture or stink that was in the car. Well, a few days later I see the powder on the passenger side was wet. The entire bottom of the passenger side floor board under the carpet is soaked. Any one else had this issue, or have an idea on what is causing it? Air conditioning? Leaky windshield?