I recently purchased a used 2006 Honda Pilot. I now notice a mildew/musty smell that appears to come from the ac vents. I only notice it when driving with the windows down, right after I turn the AC off, and sometimes when I first get into the car. I do NOT notice it when the AC is running or when the fan is blowing. I have had the car detailed twice (thinking the odor was coming from the upholstery) and have hired someone to spray an odor eliminator spray into the vents and air intake. I have also changed out the cabin air filter. None of these actions have helped and the smell remains. I love the car but this odor is really annoying me. Please let me know if there is anything else I can do to get rid of this odor, or if I will just have to live with it. Thank you!!