Explain why charcoal grills or charcoal fires should never be used for heat inside the house?
Carbon Monoxide is given off by the coals and you will outdo out and die.
because burning charcoal releases carbon monoxide ,and burns the oxygen ,carbon monoxide unites near your hemoglobin so tight that it will never leave a space for the oxygen . Because you don't want to die.
Answers: becuase burning charcoal relases carbon monoxide (CO), which is poisonous and if concentrated inside a home can kill you.