Question

why are we adviced not to talk while eating food

Answer 1

if we talk while eating food will enter into wind pipe and we can't breathe for some time

Answer 2

there is a muscular flap like structure in in our throat it is known as epiglottis and when we take a breath it closes the oesophagus and when we eat food it closes the trachea when we eat while talking it doesn't close any chamber so there is a chance of getting food into trachea which can harm us