Nasal "bone" sticking out between nostrils (Photo)

Hello Patricia202,Thanks for your question.That nasal "bone" that you refer to is actually septal cartilage that is bent into the left nostril a bit.  There is no concern about increased infection risk.  If the septal deviation is causing airway problems, then a septoplasty procedure can be performed to straighten it out and improve the airway.See a septoplasty specialist in your area for an exam on your son if the problem becomes symptomatic.Take care,Dr. Shah

Patricia, as others have confirmed here, the structure you see is actually the front end of the nasal septal cartilage. It is not bone. Your best bet is to have him seen by a facial plastic surgeon who has more experience in dealing with deviations of the septum in this particular area. I am not so concerned regarding the barrier issue and germs. Best of luck.