Second hand smoke while pregnant

We just found out I'm pregnant and I'm 6 weeks tomorrow.... issue I'm having is we live with my husbands parents... both my husband and his mother smoke in the house.... I expressed my concerns with my husband and he says he knows people who have smoked and drank through their pregnancies and babys have turned out fine

.. we havent told anyone yet so I cant Express my concerns with his mother... I can always go outside for now but our baby will be born in January... I'm not going to take my newborn outside all winter... I feel like im stressing out over it and I just want my baby to me okay... any advice would be helpful!