★★★★★
cayenne pepper might work better, but I did not have any at hand, decided to take a facial vaporizer, that has the nose attatchment, to the water, I added crushed red pepper and ground black pepper, smelled it for about 15 minutes, at medium or high setting made me sneeze instantly, did not burn and cleared me but then again I do not have chronic sinus. I guess for chronic sinus or bad infections with headaches and sinus pain- the cayenne would be more powerful .
but if your desperate enough and do not have it at hand, try my method might work for you.