6 days post op, a gap in my inner thigh lift incisions with a fluid that has a bad odor. Is this normal? (photos)

Thank you for your picture. Unfortunately this is a common occurrence with thigh lifts. The wound needs to be cared for locally with dressings. Any remaining fluid should be removed. Your plastic surgeon needs to make sure that the fluid is not infected.

Unfortunately, wound breakdown from a crescent medial side lift is not uncommon. I would suggest follow up with your board-certified plastic surgeon.  Typically, these wounds heal with conservative treatment.  I would suggest a wound culture, antibiotics and wet to dry dressings. Once the wound has significantly healed, you can switch to topical antibiotics.  Wounds like these rarely need revision or skin grafts. The resulting scar usually heals exceptionally well.  

Unfortunately you have a small wound breakdown.  Your surgeon should see you and arrange wound care.  This is not an emergency but I would recommend letting the surgeon know about this so that proper arrangements can be made