“My baby had irregular breathing at birth and was in the NICU. What should I do to protect him?”

It is not clear to me what irregular breathing means. Was your baby premature? Did he need oxygen therapy? Sometimes, lung problems at birth could predispose the lungs to be more sensitive to other breathing related problems later on, such as respiratory viruses, smoking, etc. It would be best to avoid these insults in any case, and talk to your pediatrician for specific concerns.