They aren't wrong. The car does still bring in a small bit of outside air in recirculate. All modern cars do. Perhaps you might want a charcoal cabin filter as well.
However, your flap may not be working as intended. This may be what you're looking for:
http://www.cruzetalk.com/forum/25-g...sive-moisture-condensation-frost-windows.html
However, your flap may not be working as intended. This may be what you're looking for:
http://www.cruzetalk.com/forum/25-g...sive-moisture-condensation-frost-windows.html