The cabin air filter is primarily for particulates not odors. I'm guessing that the AC is retaining condensation and that over time unpleasant things are growing in the dampness resulting in the odor you are smelling.
Why does the dealer want to charge you, are you out of warranty? I'm not sure that an evap canister is the answer. I'd get a second opinion.
If it is mold it could be a real health hazard. Some folks are extremely sensitive to mold.
Last edited by Guard Dad; 05-13-2011 at 02:06 AM.
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