What is the name of the unit used to measure the strength of pollution?

Creedy

The Olf is a unit used to measure the strength of a pollution source. It was introduced by Danish professor P. Ole Fanger; the name "Olf" is derived from the Latin word olfactus, meaning "smelled".[1] One Olf is the sensory pollution strength from a standard person defined as an average adult working in an office or similar non–industrial workplace, sedentary and in thermal comfort, with a hygienic standard equivalent of 0.7 baths per day and whose skin has a total area of 1.8 square metres. It was defined to quantify the strength of pollution sources which can be perceived by humans. http://uk.ask.com/wiki/Olf_(unit) Aug 08 10, 9:38 PM