if communication doesn't function between different individuals, then they feel irritation about each other

different lndividuals are in proximity of each other, 

why do some individuals feel irritation about each other,  

because communication doesn't work between them, 

whether they are friendlies or hostiles 

one individial might feel relaxed about hostiles and frendlies nearby, 

because communication functions between individual and hostiles 

and because communication functions between individual and friendlies 

and because communication functions between hostiles and friendlies 

but if communication does not function between individual and another person, 

then individual and person will likely become irritated at each other, 

whether they are friendly or hostile to each other