I'm glad you point this out to me, because to think of it, my cave turned this way after I made few episodes of washed rind cheeses, including a vacherin type. I put all my washed rind cheeses on top of paulownia or teak wood planks or chopping boards. Can I just save the wood and stick it back in the washed and cleaned cave to get the flora going again?
I usually take the reverse approach, where I do not thoroughly wash and sanitize the cave (save for washing the floors), but clean and sanitize the boards. The wooden boards remain with a batch of cheese until it is ready for sale, then is pulled out of the aging room, cleaned, sanitized, and left to dry, before being replaced.
After a while (and "a while" might be years) your aging room should develop a stable environment of yeasts, mold, and bacteria that will appear naturally on your cheeses without needing much introduction. (That said, if I wanted a cheese to be heavy on a particular flora (ie. Geo), I will add it during the make.)