Thanks! That makes sense. This will probably be my next step. However, I was thinking of using those vinyl sheets? I've got a fan in there now so hopefully it'll dry and destink enough the next day or two, and I can lay the vinyl on top.Your issue is you used something that is for concrete foundations and those get backfilled with dirt. See if you can find some vinyl plank flooring really cheap at the big box stores. It snaps in place and is floating. You can try a silicone the edges. That should get rid of most of the foundation coating smell.