useless facts part 1: olf (unit)

Olf (unit)
From Wikipedia, the free encyclopedia:

“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.”

i’m pretty excited. it’s the only unit i can currently think of that can’t be measured technically: in order to measure olfs you need trained people that compare what they smell to standardized odor samples.

amen.