Residual burning smell when stopped at an intersection

RE: 00 Subaru Outback Wagon:For the last two days when I stop at an intersection or stop the car to get out and park it and it gives off a faint residual burning smell, almost like rubber burn smell. The car has 66,000 actual miles, a new clutch and brakes at 11,000 miles ago and seems to motor right along, no problems noted or lights coming on. The temp gauge is steady where it usually runs. The smell goes away right quick after the car is stopped and shut off for a while too. I do not smell the smell when I am driving. Any ideas on what area to look at or what might be wrong?