Oct 31, 2016. Winter is coming, which means cold and flu season is too. You probably take your vitamins and regularly wash your hands, but there may be something making you sick you haven't considered before — your coffee mug. If you're like us, you probably have a favorite coffee cup (some of us have had ours for. Contigo AUTOSEAL West Loop Vacuum Insulated Stainless Steel Travel Mug with Easy…