It’s only screwdrivers with butyl in them that eventually smell like vomit.The ones here don't smell. Cannot vouch how the Felo's will be as they are about 3 years old now. Buy wood handled ones?
I have seen car dealers use lacquer thinner to get stains out of upholstery getting cars ready to sell, not sure if it is a long lasting but short term works.Work at a car dealer when I was younger. A mechanic bought a new set of screwdrivers and wanted to keep them looking new. Friday he got a gallon can of lacquer thinner and let the screwdriver handles soak over the week end. Monday morning and handles were gone.