If it's brand new, a few hundred miles, this might be normal as paint and oils burn off the new engine and exhaust system.
Other sources of smells could be:
1. oil leak or coolant leak in the engine that drips onto hot exhaust pipe
2. over-heated catalytic converter (unlikely on a new car) caused by a very over-rich fuel mixture (did you get horrible mileage?)
3. some part of the exhaust touching a rubber part or insulation
4. brakes are dragging, overheating the brake pads (do NOT touch the brake rotors with your finger----use a pyrometer--a needle like tool that measures temperature).
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