If the nasal cannula rubs the upper lip, patients can put a small piece of gauze or fabric under it for padding. There are also commercial products that make this tubing more comfortable for the nose and ears. Keep all cords and tubing neat. Do not leave cords or tubing running across an area where you or someone else may trip on it. Keep oxygen containers from becoming too hot. Store containers in an area with good air flow. Never leave an oxygen container in a car trunk or a hot vehicle.