I inherited a Charade (2003) and the car runs great - I did 2000 miles last two weeks and no problems at all, but one: the air from the cabin fan has got a very distinct smell (dusty?) and every now and then some bits of foam-like material and newspaper shreds (!) fly out from the fan-grills inside. My first guess was to locate and clean/replace the air filter - the car spent a couple of years just sitting in a garage, so maybe mice or something ate it? But even then, I searched everywhere online and in the instruction, and I can't work out where the cabin air filter is. Any ideas? Or what else it could be?

Thanks for all/any replies!

J.