Hygienic air environment

The air is one of the main elements of the external environment, necessary for the life of humans and animals. Hippocrates said that our health and disease depend on the nature surrounding the external environment - air, water, soil, etc.
Air environment provides a constant, daily impact on human and at the same time varies due to the presence and activity of the person. Hygienic air environment is as follows: air contains necessary for breathing oxygen, takes all gaseous products of metabolism, regulates the heat transfer. However, the air can have a negative influence on the person, if there are toxic substances and pathogenic microorganisms.