All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.
You should advise those relatives and friends of yours with wisdom and gentleness; if they persistently reject your advice, then you are obliged to leave the gatherings when they are smoking Sheeshah (hubble bubble). In fact, such behavior on your part does not consist in cutting ties of kinship with them; rather, it is an obligation to forbid evil, and leaving the gatherings in which evil is committed is a kind of forbidding evil. There is no harm in leaving the room where they are smoking and staying in another room in the house.
We advise you to seek the company of righteous Muslim women. Abu Musa Al-Ash‘ari reported that the Prophet, sallallaahu ‘alayhi wa sallam, said: "The righteous companion and the evil companion are comparable to one bearing musk and one blowing a pair of bellows. The one bearing musk will either give you some perfume as a present, or you will buy some from him, or you will find a good scent from him; but the one blowing a pair of bellows, he either burns your clothes or you find a repugnant smell from him." [Al-Bukhari and Muslim]
Allaah Knows best.