PUT AN ONION IN YOUR SOCK: This ancient remedy has been around since the 16th century. It works to reduce fever and helps alleviates colds. All you have to do is put a cut onion in your sock and leave it overnight. Onions have amazing healing properties and are rich in sulfur. They have anti-inflammatory and anti-bacterial benefits too! Putting an onion in your sock before bed will allow the toxins to leave your body. By morning, your cold or flu will be better or be gone.