Peel & stick tiles for temporary floor covering over chip board?
I have peel and stick tile in several closets on particle board. But it sounds like you may have Oriented Strand Board (visible chips) which is not as smooth on the surface, and that might make a difference. 

Closets are low-traffic, which is why I was willing to use P&amp;S at all, but it was a definite improvement from the nasty old carpet removed and the bare particle board left when the carpet was gone. You'll need to address the raised area around the seam in some way, perhaps sanding.

I think it would be worth a try if you do a careful job, since you have the material on hand (sounds like "as excess.")