Steam can be beneficial for reducing symptoms of COPD as it helps to thin mucus and open up the airways. To use steam, you can take a hot shower, inhale warm vapors from a bowl of hot water, or purchase an at-home steam inhaler. However, it is important to remember that this should not be used as a substitute for other treatments recommended by your doctor. Additionally, it is important to monitor the temperature of the steam carefully to avoid scalding yourself.