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According to below chart (in which the source from 1986 is also stated) the optimal indoor air humidity for human health is between 40-60%, as close to 50% as possible. The low humidity levels you described (5%) would apparently be optimal for bacteria and viruses and negatively affect allergic rhinitis and asthma. Such low levels of indoor air humidity can ...


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There is a mixed, but largely unconvincing evidence that increased moisture within the nose would help to prevent or cure flu or common cold. Common colds: Relief for a stuffy nose, cough and sore throat (Informed Health Online): Many people find it pleasant to breathe in (inhale) steam ...But this kind of inhalation doesn't have a clear effect on cold ...


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Pathologies due to mineral inhalation are a broad spectrum of diseases called pneumoconiosis. You can read about it here in Wikipedia. The type of disease is different regarding different minerals, and this reflects to the treatment approach.


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Sites vary, but most mention a median range of between 30-40% humidity. 40-50% Humidity During extremely cold weather, your home loses humidity to the outdoors and may drop as low as 5%. By comparison, typical humidity in the Sahara Desert is about 25%! Generally, one does not want to have a home humidity any lower than 30%. Optimal comfort is ...


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