I'm not sure if you need to wash them again, but if you do, wash them in vinegar and baking soda. Yes, you just dump a bunch of vinegar into the washer along with a bunch of baking soda -- I never measure, but it's likely about a cup of vinegar and a third of a cup of baking soda. I can't believe what this concoction can do with odors -- It came from my grandmother and mother (and I'm in my 60's), so has been in my family for some time.
I actually will add it to the washing machine when I do towels and sheets. They come out smelling like they were hung outside on the line.
Hope this helps.