Benton County Oregon
Hello, my understanding is that the wood is fine to burn, but the issue may be the residual ash that covered everything. You should use a dust mask when handling the wood at the pile to avoid breathing any of the residual ash on the wood, and I would also suggest knocking off the ash by banging the wood or using a blower. Again, the main issue is breathing the ash. Avoid that, and don't transport the ash into the house.