I recently had an abdominal mesh wall put in me. Can I smoke a cigarette?

Depending on how long ago your surgery was performed,I would likely advise you to avoid the use of nicotine of any kind. As you likely know, nicotine is a  powerful vasoconstrictor and can reduce blood flow to any healing incision line.  Run this question by your surgeon for more specific thoughts.  Best wishes.

No. Smoking is bad for your health, period, but it will definitely adversely affect your healing process. It can lead to infection and even necrosis. Kindly,Kouros Azar