I have a "Wood Land" steel woodburning stove. 8 months ago I applied furniture/wood oil to the exterior to make it shiney. Today is the 1st time to use the woodburner again since last winter. Everything went well until a few moments into it, I noticed smoke coming up off the top of the burn box, thought maybe there was a leak but was told it may be from the wood oil I used to polish it with. Would it still be on the stove 8 months later? How do I remove it?