If there's no black smoke when you heat it with a lighter then there's no coating to begin with. But if there is, you need a blowtorch or an open flame to burn it all away.
More likely it has some sort of oil in it from the factory, which can be removed with alcohol.
Putting it in vinegar will rust it and give you a very wonderful rust-ic scent when you vape.
I don't want comfort. I want God, I want poetry, I want real danger, I want freedom, I want goodness. I want a clever signature.