Thanks for your question -

As you've read from the other surgeons, smoking is a serious risks for complications.  In addition to umbilical or superior abdominal flap necrosis, you also risk anesthesia complications including pneumonia.

Usually a month is enough time to begin to minimize your risk.  Remember, this doesn't only mean stopping smoking but avoiding nicotine gum, the patch or other sources of nicotine which can contribute to problems.

Also, be sure to have a plan for avoiding smoking during your recovery period.  Many times patients can be at greater risk for relapse because you have increased downtime while your recovering and boredom or anxiety can contribute to the desire to smoke.

I hope this helps!