I would wash everything which is easily washed, as someone else suggested. One thing I recently found, quite accidentally, which took a mildew smell out of a book I bought, is placing the offensive smelling item inside a scented, odor removing kitchen bag! Dh buys these, I don't. I only put the book into the kitchen bag because I didn't want to smell it, and that's the kind of bags we happened to have at the time. Later, when I removed the book from the bag, which was in my car for a couple of weeks (didn't want it in the house), the smell was barely there!! Not sure if it will work with all brands---the bags we had were Hefty Odor Block, Lavender-Vanilla scented.