If I'm not mistaken, I think they put denatonium in acetone to prevent people for ingesting it (yes it's very bitter).
It's soluble in acetone so it shouldn't be a problem.
But a small amount might stay in your cocaine, you'd have to wash it very well (however you'd be washing it with the same bottle of acetone so it'll be kind of pointless).
Someone more experienced might be able to give you more insight about this particular case.
Btw denatonium free acetone should be relatively easy to get.
If you want to wash cocaine it's best to use anhydrous acetone since coke is very water soluble. If you can't get anhydrous you could always dry it using a drying agent (like epsom salts).