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Personal sensitivity : There are other dangers from substances which are not so common. e.g. mutagens , but one aspect we have not mentioned involves you. The eyes, lungs and skin of different people can vary greatly in their sensitivity to chemicals. Also certain substances e.g., detergents, epoxy resins, disinfectants, dyes, nickel and chromium salts, are more likely than others to cause dermatitis and skin trouble. Most of these disorders can be overcome by simple hygiene, e.g. the use of gloves, etc. The situation is complicated by the fact that people may suddenly become sensitised and react to very minute amounts. A common example is a bee keeper who is used to stings may suddenly have to give up bee keeping because he has been sensitised which means that he has become allergic to bee sting and the next sting might kill him.
what is a engineering physics about these substances
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