I am not sure of the Smith torch, but the Turbo Torch has a
removable orifice which can be screwwed into the handle and "blown
out". Look down inside the tip for a screw slot. Otherwise you might
be able to ream the orifice with a small wire, being careful not to
damage the orifice. The larger Oxyygen / Fuel gas torchs have
reamers available to ream out the torch tip and file it flat again.
You could check with a local gas supplier that sells Smith torches,
but not everyone in supply houses know what they are talking about
so evaluate the answers accordingly.