Home sweet home. Houses are supposed to be our nest, a shelter from the world outside. But how healthy are European homes? Nowadays most of our time is spent indoors, often at home, one reason being the current shift to “desk jobs”.

As air pollution is largely considered to be an outdoor problem, people are little aware of indoor contaminants . The World Health Organisation estimated that each year 4.3 million people die of exposure to household pollutants.