well, yeah, when the smell was back last weekend, I noticed it when stopped in traffic and it seemed directly connected to the clicking. Now that the smell has gone, so has the clicking. I did check under the hood and saw nothing; no smoke, nothing. And I'm also still concerned about the fresh air coming in hot through the vents. It does seem like something's burning under the hood, but the car's running like a top and the gauges all look fine. And the fact that the outside thermometer drops when on the highway leads me to think it's getting cooled when at high speeds because the temp raises when driving through town.