How To Cure Smell In The Nose Despite Wearing Mask?

I ve been suffering from allergic rhinitis for the past 2 years. Since my first sinus infection two years ago, there has been a foul smell coming from my nose. I heard other people describe it sometimes as poop-like smell, sometimes, rotten egg smell, and at times, rotting rice smell. I ve been doing the nasal wash for the past two years; religiously taking chlorpeniramine maleate 4g and pseudoephedrine HCL 60 mg every night, and loratadine every morning. I also spray 2 puffs of Rhinocort Aqua 64 mcg in each nostril every night.While the nasal inflammation has greatly improved, I think the foul smell is worse. People can smell it even when I m wearing a mask with carbon filter. Where is the smell coming from? What should I do? Please help.