What could be causing foul odor 6 months after rhinoplasty revision?

I had (failed) revision rhinoplasty 6 months ago and had a smell almost straight away after. The smell is now so strong and gets worse if i move the nose eg wrinkling the nose or moving when washing my face. Recently its been super strong at night and even waking me up. Its a really really horrible, foul smell, particularly in one side. Had 2 courses of antibiotics and its still here. Im desperate for a solution.