Many people wonder if a serpentine belt can cause a burning smell. Yes, it definitely can, when any of the accessories of the car’s system get stuck such as AC compressor, water pump, generator, etc. The friction of the belt on the frozen part overheats it and causes a burning smell. Also, if the automatic tensioner fails, it slips and causes a burning rubber smell. The remedy is to change the faulty belt. Also, you should check the belt every 6 months to assess your health.