I had this happen too! My husband and I washed a cabinet we bought at a garage sale to lose the smoker smell only to find a new smell.

Our cabinet no longer smells but it took a while before we were sure the smell was gone. To get rid of the smell we placed our cabinet in a sunny room where the air would move throughout the cabinet, opened up all the drawers and doors and put a few cans of gel odor remover in each area. Between drying it out, moving the air and the odor removers (bought at Home Depot or Lowe's) a few weeks later ... No smell!

Good luck!