There are two primary sources of odor in micarta.
1. Phenolic - an odor associated with the resins used in production. This is likely the source of the issue and exacerbated by being in the box and probably heat from the shipping truck environment. Or, maybe some resin just didn’t settle 100% for whatever reason
2. Biological - micarta has mild porosity and oils from various places can penetrate a little bit at times (not deeply in my experience)
In either case, here is the protocol I used to deodorize a knife with sheep / ram horn. It should work for you as well.
Step 1: use dish soap again on the scales and wash off with hot water. Then, do a second rinse with a bottle of purified water or water from a Brita
Step 2: put white vinegar (the type you would use for laundry) on a rag and wipe down the scales. Let it sit for 15 minutes.
Step 3: soap and water again
Step 4: fill a bowl with dried whole coffee beans. Make them high quality beans and use the whole bag
Step 5; bury the knife in the coffee beans
Step 6: place bowl in garage, basement, or in closet for 5 days
Step 7: rotate knife every other day
Step 8: wash again. Repeat if necessary. If odor is gone, apply light coat of pharmaceutical grade mineral oil to scales