SMELT is validvalid

SMELL, to perceive by means of the olfactory nerves [v] / to melt or fuse, as ores [v SMELTED, SMELTING, SMELTS] : SMELTER [n]

12,960 of 196,601 in NWL2023·also valid in CSW24

to melt or fuse, as ores [v -ED, -ING, -S]