Exhaust Smell in Cabin

[andrewdrouin]

Anyone else have an annoying (and likely toxic) exhaust smell in the cabin of their 2003 Subaru Forester XS? I've even had a brand new exhaust system installed from the manifold to the tailpipe, including the cat' convertor, and still the smell persists... Someone suggested that some kind of hoses related to the air intake system might be buggered, but a close visual inspection reveals nothing... Any other ideas that I might follow up on would be appreciated. Tnx. Andrew