Luckily the smell just stays in that room. It's not terrible; I'm mostly concerned about passing out in there after a couple hours. I'm not sure how much it's off-gassing still. Steam cleaning is a good idea. I'll start with that.
My house used to use heating oil but has been converted to gas. The oil tank has been removed and I'd like to turn that room into a workshop but it still has a fairly strong oil smell. Is there something I can use to seal the surfaces to block the smell? The floor is bare concrete and walls are...