Been looking for the answer to this one for quite some time.
As we all know, sometimes things can get a little messy and when that happens, odors can be retained in the toy. I'm talking about excellent quality dildos (because that's all I use). I've tried many things to remove that odor with little success.
Voilà! Success. I'd just purchased a bottle of pure acetone at the drug store - labeled "professional maximum strength 100% acetone". Quite inexpensive. (Not the colored, scented fingernail polish remover.)
I have a Blush Novelties Ergo Mini that had retained an odor. That is a dual density dildo, softer than most. According to Scott's article - the softer toys are more prone to odor retention. (He explains why - go read it.)
Used the acetone as described (I had the makeup pads on hand already) and it worked like a charm.
Spread the word! (Just credit Scott at SquarePeg Toys.)