Drove through a dairy farm, washed vehicle several times, and still have smell coming through vents when start up vehicle. Where is the air vent and/or is there a cabin air filter that can be changed?
You might have both. The fresh air intake is under the windshield wipers, that vent takes in the fresh air from outside. The filter is usually in the rear seat section on vans and suvs, somewhere, sometimes up front under the dash. You can switch your ac or fresh air control to recirculate and it will cut off the outside air. We always do it on dusty roads and dead skunks. Hope this helps.
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