One week that the term "**** Week" is a more accurate description surrounding smoking is the week that a person finds out they have lung cancer, or ends up in a hospital after a heart attack, or ends up partially paralyzed or unable to speak from a stroke, or the day a person starts on oxygen, or the day a person ends up on a burn ward from a fire they started with their own cigarette, or the day a person dies suddenly or unexpectedly from a smoking induced incident.
Even in these cases though the term "**** Week" is an inaccurate assessment of time. These people may end up going though weeks or months of what they consider hellish experiences and still sometimes end up losing the battle to save their lives. In the case of sudden death, "**** Week" doesn't apply either, at least not for the deceased individual himself or herself but likely for the family and friends left behind. The suffering and sadness of these family members and friends will not likely end on day eight either, they will be facing the sadness of the smokers premature loss for a long time to come.
I guess the closest a week may be considered "**** Week" in regards to smoking is the week a person relapses. That is the week they have to admit failure to everyone they know, unless they start their new lives living the lie of being closet smokers, which creates it own problems that last a whole lot longer than a week. This is the week that they start to smell like **** again, and possibly start to experience perceivable detrimental effects again. This is the week that they start paying exorbitant prices for a product that is attacking their heart, lungs, self-respect, self-esteem, start to make them question their own intelligence or their own common sense, and affect the ways other people view them. In the case of the closet smokers who eventually gets caught, it also threatens their basic honesty and integrity for they are living a lie now and are always afraid of being exposed.
The week a person relapses may be hellish but the problems posed by smoking will not end in seven days for them either, but rather get perpetually worse as the days, months and years pass while maintaining the active addiction to nicotine. To end the hellish experience of being a smoker is as simple as knowing not for seven days, but for the rest of your life to never take another puff!.