If this smoking is adversely affecting your health and well being you may have a right to withhold rent. To withhold rent though you must follow certain precise procedures. I would recommend consulting an attorney as to how to go about withholding rent.
The foregoing answer does not establish an attorney client relationship, is not confidential, and should not be relied upon in place of an actual consultation with an attorney. Attorney Samiotes is licensed to practice in Massachusetts, the Federal District Court of Massachusetts, and the Court of International Trade. Most initial consultations are free. Further information is available on my profile and at http://www.bjgalaw.com/.