Martin Evans tells us:

^^I've not tried using a lump of stainless but the pumice based hand
cleaner I normally use after being in the workshop doesn't get rid of
the smell after chopping garlic.^^

Now if we can just get you to try a chunk of stainless to compare
to.......

dennis in nca
p.s. In my opinion nothing ever compared to the old old Lava soap. I
don't think the new old Lava is nearly as good.