Interesting that you would mention "Honey". A friend of mine is recuperating from a bad bout of MRSA and the wound is being treated with honey along with IV antibiotics.
Back in the old days, we treated non-healing wounds by packing them with sugar, or strapping an oxygen mask on the wound and giving it an enriched atmosphere. Folks have tried hyperbaric oxygen therapy, and all the colloids and stuff already described. These approaches are regaining some status as we run out of effective antibiotics.