Disclosed is an area sensor for air quality in the cockpit, crew rest or other area of an aircraft. Noxious fumes, fuel vapors, carbon monoxide and other vapors can cause significant risks to the flight crew of an aircraft. Fumes may cause drowsiness, inattentiveness or confusion to the pilot of an aircraft placing all persons on board an aircraft in danger. There exists a need to monitor and warn the cabin crew of such an event so that measures can be taken, such as donning an oxygen mask, to mitigate the fumes. Many of the vapors encountered that can cause this issue are colorless and/or odorless and therefore not always detected by the flight crew especially if they are in sufficient quantities and exposure is long enough to compromise the pilots cognitive skills.