It is usually the result of eating, drinking, smoking, etc., in places where chemicals are being used. In most cases there is no excuse for chemical poisoning through this route of entry. It emphasizes the need to wash hands thoroughly after using chemicals. Good common sense will usually prevent poisoning via this route. Absorbtion Chemicals can enter the body through abraded or unabraded skin.
Many chemicals can absorb through the skin and directly enter the bloodstream.
This can lead to damage of blood cells, liver, kidneys and other vital organs. Caustic chemicals, such as acids and alkalis, can also severely burn the skin. Inhalation Since the lungs are very vascular chemicals may enter the lungs through the bloodstream or damage the delicate tissues of the lungs. Chemicals can enter the body via the lungs through mists, fumes, vapors, and gases. Many chemicals may even deaden the sense of smell after a time.