Reconditioned Drum Question

I'm planning on building a drum smoker soon and have a question about my drum.

I picked up a reconditioned drum from a local supplier. Apparently the drum was burned out at high temp., pressure tested, and then the exterior painted. This sounded great, but when I opened up the drum, the metal was not bare as I expected, but rather was a dark color and there was a slight odor in the barrel.

Any thoughts on what I should do to get it ready to build out? I don't know if the dark color interior is normal on a reconditioned barrel or whether I need to burn it out again before building and seasoning.

I'm at work now so can't post pictures, but will later if it will help.

Any thoughts or help is appreciated.

Joe

ETA: i know there is a 750 page drum smoker thread, but I have no idea if my question is answered in there and if so, on which of the 750 pages.

I built one from an oil drum and its 5w30 oil...when cut it i burned the inside with some wood..till the oil got burned...idk what smell yours have but mine didntsmell oil after i burned it...ive been cooking with it for awhile now..try burning the inside again.

Thanks for all of the replies.

I ended up returning the reconditioned drum ($45) and buying a new drum ($82) to be sure there is not going to be anything toxic inside. I'd rather spend the extra $40 than put in the time and effort to clean out the reconditioned drum.