In the event that must be in place with much dust, mist and smoke, use a mask or mouth off water-dampened cloth nose helps SAP filters. But if you avoid it, avoid being in such places.
Where to stay in place with smoke and dust. Apply the mask to cover their mouths and noses or damp cloth to wipe the filter , but if avoidable. To avoid living in such a place.
In the case of must be in place to smoke and dust. Use the mask to shut off the nose or a wet cloth to help absorb damp filter but case avoided. To avoid being in such a place.