I had a very light smell for about a month in a very specific situation. When going home some day I have to pass my house, go down a fairly steep grade, pull a u-turn at a cross st, drive back up the grade and park (no stopping). A number of times when doing this I got a very light smell which I assumed was either the brakes doing something during the U-turn or maybe the clutch if I slipped it too much going down to second (which I highly doubt). I never got any smell when going through my work parking garage (U-turns, slightly less grade). Anyhow, it completely resolved itself on its own so I figure it was some sort of bedding in issue.