Family that smokes?

Unfortunately, my husband and I have a significant amount of family members that smoke cigarettes... The smell of it alone makes me nauseous I can only imagine how a little newborn would feel. Any suggestions on dealing with this? & Not hurting the family members feelings?  I just envision our families coming to see the little guy in the hospital and the room wreaking of smoke as soon as they all walk in. Sigh. Just another thing to worry about....