 up everything we're down to the plywood and we were just going to put in a new flooring so is there anything we should do before we do that yeah i would i would also prime the plywood okay i'd seal everything and i would use a good quality oil-based primer like a kills for example and i would prime the heck out of everything because that does a good job of sealing out those odors that in some just normal ventilation ought to do it but i think if you don't prime those surfaces you