Automotive air bags inflate when sodium azide NaN3 decomposes. In preparation of the airbag a scientist reacts sodium with nitrogen to obtain sodium azide:
What is the limiting reagent in the reaction?

Nonmetals usually react by gaining electrons

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.

Ci hope  it  you