Since your father is suffering from CCF, here are the basic symptoms :
1) history of heart disease
2) fluid in legs/or other parts of body.
3)shortness of breath
Your father has fluid in the Lungs, and during sleep it is intensive.
Neubliser won't help.
My sincere recommendation is that you take him to a good hospital under care of good cardiologist and now .
This short and sweet answer.