The most possible effect of over exposure to chemicals is the weakening of immune system.
There are certain chemicals which are very harmful for the human body such as insecticides and pesticides etc.
Along with them many chemicals which occurs in gaseous state at a room temperature are also very dangerous for human health. For performing research and development procedures the exposure to these Chemicals is not that much considerable.
But when the human body is overexposed to this chemicals, the weakening in the immunity system is observed within the human body because of the contamination of the body due to these chemicals.
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