There are a number of things that you can do to prevent an ear infection including: Drink plenty of water daily. Eat plenty of fresh vegetables, especially greens. After a shower, use a blow dryer on low setting to dry your ears. Wear a scarf or other covering over your ears when you go outside in windy weather. Coat your ears with mineral oil before swimming. Reduce your intake of dairy products. Avoid consuming food made with processed sugar . Don’t smoke and don’t drink alcohol excessively.