If your sweetie's favorite cuddly toy is starting to give off a smelly odor even after you have washed it, it could be that the scent is being caused by bacteria or germs trapped in the soft absorbent fibers.
To eliminate the odor for good, combine equal parts water and white vinegar in a large container, sprinkle a bit of baking soda on the toy and submerge it in the solution. Soak it for 10 minutes, then wring it out. Let it dry.
The combination of vinegar and baking soda will kill odor-causing bacteria so your pal can play with her beloved toy again.