medical question not necessarily pregnancy related.

I heard that most the population of adults carry the one type of herpes virus. My husband for most his life has gotten a cold sore like every 2-3 months. I barely ever have gotten one (like 2ce in my life). What does this mean? And should I be careful about him kissing the baby?! I obviously don't want anyone kissing the baby in the face but he's the father and I wouldn't have found it a problem if he never got sores.