Smoking

It is my 1st trimester and the whole family knows that I am conceiving. However my husband and my father in law still smokes in the house and when i come out of the room, the cigarette smell is so strong. No matter how many times i said i dont like it, and the fact that I am just concern about the baby, my husband would just simply said “ok” but still do it and my father in law too.. it is just so frustrating because i hate the smell of cigarettes and it makes me feel nauseous. What am I supposed to do? ?