Is the filter contaminated after it has filtered air exposed to contaminants from a terrorist attack?
Yes, we recommend that you change the filter after it has been exposed in a terrorist attack and that it be treated as hazardous waste; wear a respirator, gloves, eye protection and place the filter in two plastic bags and seal. We also recommend that you contact local health and safety officials for further information and instruction about how to ensure proper, safe disposal of the filter and other potentially contaminated items.
