When MERV Won’t Do the Job: Air Cleaning Solutions for Smells & Toxic Gaseous Chemicals

Typical media filters do not remove gaseous contaminants, a large group of chemicals that covers both gases and vapors and includes carbon monoxide, ozone, nitrogen oxides, ammonia, formaldehyde and all volatile organic compounds including the many odorous ones. To effectively reduce odors and other gas-phase contaminants, you need to use an air cleaner that is intended (and tested) to address gases.