Blacksmiths surely are safe from these things. And if a blacksmith was to turn his anvil upside down and to say malicious words, he could do you great injury.
There was a child that was changed, and my mother brought it a nice bit of potato cake one time, for tradesmen often have nice things on the table. But the child wouldn't touch it, for they don't like the leavings of a smith.
Blacksmiths have power, and if you could steal the water from the trough in the forge, it would cure all things.
And as to forges, there's some can hear working and hammering in them through the night.