Hello everyone! My husband was recently diagnosed with bullous emphysema. He currently has a cold. He has green colored mucus and feels fatigued. His pulmonologist has a prescription for prednisone ready for him at the pharmacy as his rescue pack. I’m just wondering when should he use the prednisone? He does not have SOB and his oxygen level is within his normal range of 94. This is the very first time he caught something since he was diagnose late last year. Thank you everyone and have a blessed day!