There's a mostly unknown product on the market named Alkalol which can be special ordered from the Walmart Pharmacy in our town for something like $4.00 for a 16 oz. bottle.
This will not cure your cold (will anything?) but you'll feel better. It's a nasal wash, mucus solvent and cleaner. I cut it 50/50 with water which I nuke five to ten seconds as it works better when its warm. Then I fill up a tablespoon and suck it up each nostril and get it up into the sinuses as far as possible. I also gargle it. The ingredients include purified water, Menthol, Eucalptol, Thymol, Camphor, Benzoin, Oil of Wintergreen, Spearmint, Pine, Cinnamon, and some stuff I don't recognize plus a little alcohol (2/100 of 1%). This product was recommended by a pharmacist to an older aunt who told me about it and I told the rest of the family. Now we all use this. We've discovered that if we start with this product at the first sign of a cold or sore throat we can often head it off. It is manufactured by the Alkalol Company, Box 273, Boston, MA 02133-9998. Phone 800-967-4904.
Disclaimer: I am not associated with the company and I do not own stock in the company.
Mary Davis Nowell. Based close to Fort Worth. Shopping Interstate 20 east and west, Interstate 35 north and south.