if it were acetone I'd like to think you'd know. Mine smell approximately like sake and usually look like watery seminal fluid. Didn't see any yellow til it started to cold crash after putting it in the fridge. The only thing I can think of it it weren't contaminated is the age of the batch perhaps but that seems like a real stretch.
If you're not going to drink it, you might try doing the ABV test mentioned earlier in the thread to find out what the alcohol level was if it had any. If you do it outside (aka safe area) you might be able to ignite the alcohol cooking off to verify that it actually had some.
