Cold cures, not sores

Old Polish* recipe

1 cup of quality lemonade
1-2 cinnamon sticks
1-1.5 cups of Brandy

In a saucepan, pour the lemonade over the cinnamon then bring to a boil, simmer for 5 minutes, staying close to the stove. Once the five minutes are up, throw out the liquid and drink the brandy.

Okay, so it might not cure the cold, but you won't care!

*From my immigrant great-grandmother, who was born in the Austrian-Hungarian region of Galicia, now in Poland. She lived to be 95 (or 105, depending on which story you believed)

Gluhwein.
And chicken soup.

There is really no way to prevent a cold, but you can make the symptoms and duration shorter.

learn how to wash your hands and try not to worry about it too much.