She stipulated that her husband would not smoke and he did not adhere to the condition
Question

                Can a woman stipulate that the one who wants to marry her should give up smoking? What should she do if he does not adhere to this condition?.
Praise be to Allah.
    Firstly: 

    Smoking is haraam, because it is a waste of money and harmful 
    to one’s health, and it harms others. This has been explained in the answer 
    to question no. 10922. 

    Secondly: 

    Whatever conditions the couple stipulate at the time of 
    marriage, the basic principle is that these conditions are valid and must be 
    fulfilled, so long as they are not contrary to sharee’ah, because the 
    Prophet  (peace and blessings of Allaah be upon him) said: “The 
    condition which most deserves to be fulfilled is that by means of which 
    intimacy becomes permissible for you.” Narrated by al-Bukhaari (2721) and 
    Muslim (1418). 

    If the husband does not do that which was stipulated and made 
    binding upon him, then the woman has the right to have the marriage 
    annulled. 

    Shaykh al-Islam Ibn Taymiyah (may Allaah have mercy on him) 
    said: 

    If he stipulates that she should offer the five daily prayers 
    regularly, or that she be truthful and honest after the marriage contract, 
    and she does not do that, then you have the right to annul the marriage. End 
    quote. 

    Al-Ikhtiyaaraat al-Fiqhiyyah (p. 
    219). 

    Similarly, if a woman stipulates that her husband should give 
    up smoking, and he does not do so, then she has the right to annul the 
    contract. 

    Shaykh Muhammad ibn Ibraaheem (may Allaah have mercy on him) 
    was asked about a woman to whom a man proposed, and she stipulated that he 
    should not smoke, and he agreed, so he married him, then she found out that 
    he smokes. What should she do? 

    He replied: 
If the matter is as described, then the 
    woman mentioned has the choice of either annulling the marriage with him, or 
    staying with him. End quote. 
    
    Fataawa al-Shaykh Muhammad ibn Ibraaheem 
    (10/149). 

    But our advice to her before annulling the marriage is to try 
    to set her husband straight and help him to give up this haraam thing. If he 
    mends his ways, then praise be to Allaah, but if he persists in it, then she 
    should weigh up the pros and cons, because staying with him may be better 
    for her, for the sake of the children’s upbringing and so on. 

    May Allaah guide him. 

    And Allaah knows best.