 [ Symptoms ] how long should i take doxycycline for kidney infection [ Disease ] it would be nearly impossible to make an estimate just based on the information you shared there are no equations or scales that have ever been developed to get pack equivalences from second hand smoke in closed environment like you describe needless to say she is very exposed and it is a well established fact that second hand smoke just in a home environment could be equivalent to smoke a 12 pack of cigarettes per day she is likely to be getting more exposure than that cigars produce more smoke and that smoke is just as risky as being downwind from a cigarette even third hand smoke    the chemicals that stick to her clothing and hair are known to be a health risk as a militant anti smoking health professional that is not a place that i would want any loved one to work i guess wearing a respirator at work is out of the question and would be bad for business