Indoor Air Quality usually is under effect of  Volatile Organic Compounds (VOCs).

VOCs refer to a large group of carbon-containing substances including hydrocarbons, alcohols, aldehydes, and organic acids. they are particularly concentrated indoors due to internal sources from interior products and building materials such as furniture, plastics, carpets, wallpapers, cleaning materials, copy machines, lacquers, solvents, synthetic fragrances, insecticides and tobacco smokes.

VOCs can cause serious health effects in both the short and long term. Health effects vary from headaches, fatigue, loss of productivity, and sleep disorders, minor eye, nose and throat irritations all the way to liver and kidney damage or cancer, depending on the level of exposure.

Controlling air quality in buildings brings health benefits and high productivity for humans.