Garlic The same oils that give garlic its unmistakable scent are deposited by the bloodstream into the respiratory tract. There, they inhibit cough and cold microbes, and they are effective decongestants.
Honey While there's little research on the subject, many cultures believe that honey is a respiratory tonic, gently improving breathing. Honey is known to be antimicrobial, and it helps the immune system fight infection. (Check out these 6 other uses for honey.)
Lemon According to Schar, "Lemon juice reduces and thins mucus, which makes it easier to unclog a stuffed-up respiratory system." Lemon juice also alters the body's pH, potentially making it less hospitable to viruses and bacteria.
SRC: Grab this Cold Recovery Tea Recipe at: www.prevention.com/health/health-concerns/cold-garlic-lemon-honey-tea-colds