Family members who smoke

Jennifer
My hubby and I are expecting our first baby after years of trying in May. Being a ftm, I am feeling very protective of this little one and SIDS is on my mind. After reading things that may help prevent SIDS, smoking came up. My MIL and aunt in law both are smokers and quite frankly stink all the time. Just wondering if anyone has told family/friends who smoke they can't hold your infant or what have you done in this kind of senario.