This suggestion isn’t really about gear but it does have to do with a cold remedy. For sinus infections……you’re gonna think I’m nuts……..snort a small amount of lime or lemon juice up each nostril one or two times a day for two days. WARNING YOU WILL DISCOVER SINUS PASSAGES YOU NEVER KNEW YOU HAD!!!!! The atomic explosion in your sinus cavity only last a few minutes lol. The acid in the juice makes the PH in your sinuses acidic killing the infection also there are several other vitamins and minerals in the juice that will help. I have battled sinus infections all my life and just recently tried this. The infection was gone by the 3rd day.