[RKDinOKC]

Popcorn with liberal amounts of melted butter, Garlic SALT (not powder), and Cayenne or Red Pepper.
Always both stops my coughs, but clears my sinuses.

Garlic in garlic salt or garlic powder is an antiseptic.
Red pepper is a natural source of vitamin C and produces an acidic environment making it hard for bugs to replicate. The heat in the red pepper also stimulates endorphins to easy the pain/scratchiness.

For sore throats I use Chicken Broth (not low fat or low salt) heated with liberal amounts of Garlic Powder, Red Pepper, and black pepper. Sip.
Clears up throat problems, gives me my voice back within a few minutes, and the chicken broth gets rid of that achey all over feeling.

When feeling fluish I also eat large amounts of French bread made into garlic toast with LOTS of butter, garlic powder, red pepper, and mozerella cheese. Sometimes I add pepperoni slices.

I also keep Sudafed, and Decongestant cough syrup around to stop the sinuses from running out of control, often the cause of sore or itchy scratchy throat.

When nasal cavities get really irritated and stopped up I douche my nose with a warm salt water and vinegar mix.
Immediate relief.