Po306 code.Engine has miss.Burning smell

P0306 indicates that the controller has detected a misfire on cylinder #6. You need to get the vehicle checked out. You cannot drive for long with a dead miss on one cylinder without eventual damage to the catalytic converter which will cost you money. Find a GM or Chevy specialist, here's a directory link for you: http://repairpal.com/chevrolet-repair-in-stoughton-wisconsin