Look into sachets with charcoal in them. Many options on Amazon. You can put them in your drawer and see if it helps. I also like to get sachets with dried lavender in them to put in each drawer. You can also try putting moisture absorbers in your closet.
Also, as others have mentioned your closet could still be off gassing, especially if you keep everything closed up. Open your closet door and let either air out for a few days. Use a fan to push air into it or to pull the air in the closet out.