Loew's has an N95 filter impregnated with charcoal which I have been carrying. The charcoal should be a step up from the normal N95. You may also want to get some kind of air-tight goggle for smoke. I bought a cheap (about $6.00) pair of speedo swim goggles to carry in my pack, since I take the commuter rail and subway. I keep the filter, goggles, nomex hood, light, and gloves in an outside pocket of the pack.