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Types of ventilation

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than before, like it or not. \\ There are two other things that have changed: - Buildings are more ... entral Europe - and we have heard about this from other Winter cold climates in the world, too. This exp... adon, volatile organic substances, dust, and many other toxic substances** are also present in indoor air... tems, the kitchen, bathroom and toilet as well as other areas with high humidity and odours are ventilate