Maybe have the driver out - baking soda overnight, then hoover out and put driver back ifcya think the smell has got in to any wadding..
Baking Soda in the box it was shipped in?
If the nut is not glued in... i'd get a new nut from the bay/AliExpress and give it a go...
If not the baking soda / supeglue fix - a little blob in each slot - might be all it needs