I think this discussion is confusing people. For wildfires, an N95 is decent protection. Working on "the pile" at Ground Zero day after day or being inside of a burning house full of thick smoke and poison gasses are completely different situations from simply being downwind of a wildfire. Until recently, I believe that even professional wildland firefighters rarely used more than a bandana. You see more of them using masks like Whiffs by Xcaper, but that's a fairly recent development, from what I can tell.