Will steam help a person with a cold?

It can be helpful: Yes it can be helpful and opens up the nasal passages and help to breath as it clears up the secretions

Cold & steam: No harm in taking steam, Steam helps to decongest nose and that will help to feel better and breathe better .

Steam with a cold. : Breathing in steam through the nostrils will help someone with nasal or sinus congestion to breathe better by thinning out the congestion and facilitating its drainage. It's a nice natural way to provide some symptom relief.