I am a CPAP patient and use a machine with a humidifier. Would it make sense to use the packet in the water solution for the humidifier? Posted on: December 31, 2018 0 Vote Up Vote Down Ask A Doctor Staff asked 5 years ago I am a CPAP patient and use a machine with a humidifier. Would it make sense to use the packet in the water solution for the humidifier? 1 Answers 0 Vote Up Vote Down Ask A Doctor Staff answered 5 years ago It will make no difference to add salt to the water. I recommend you use water alone in the humidifier. Please login or Register to submit your answer Username or Email Address Password Remember Me