What is the latest treatment for recurrent nasal polyps?

I am suffering with chronic sinusitis and polyps. I am not able to breathe freely due to the polyps. The sinusitis causes the bacterial or fungal discharge. I got operated for polyp removal once but I was relieved from the blockage for only 2-3 months. I use Ortrivin (Xylometazoline) 0.1% daily 4-5 times, even then I face problem in breathing. I have lost my sense of smell. When the infection is high I resort to Itraconazole 100mg and Ciprofloxacin 500mg with Tenidazole 600mg along with Xylometazoline. I tried all other conventinal methods like ayurveda, homeopathy and others but none was able to relieved me. I even have slight DNS. What can be done to atleast breath uninterruptedly?