Pain and Smelly Discharge 3 Years After Several Surgeries

Drainage 3 years after surgery is abnormal. Smelly drainage is more worrisome implying bacterial involvement.  You really should go back and see the last (laparoscopic) surgeon. The most likely cause would be exposed suture or permanent material used in hernia repair.

Having the symptoms you describe so far out from your surgery is concerning. I agree with the other recommendations. It is a wound-healing issue that is likely related to a foreign body such as a non-absorbable suture. I would contact your surgeon - either the one who did the laparoscopy or your plastic surgeon for an evaluation to get treated as soon as possible.