EVERY TIME I ACCELERATE OR MERGE OR DRIVE WITH ALL THE WINDOWS UP, I CAN SMELL A ENGINE EXHAUST/BURNING TYPE SMELL. THIS SMELL GIVES ME A HEAD ACHE AND MAKES ME FEEL NAUSEAS. I HAVE ALREADY HAD THE 'CARBON MONOXIDE CONCERNS' DEALER SERVICE AND THIS SMELL HAS NOT CHANGED. I HAVE TO PUT THE WINDOWS DOWN CONSTANTLY TO NOT SMELL THIS SMELL THAT GIVES ME A HEAD ACHE.