My son has cystic fibrosis carrier and I have no idea from which part of a family he got it and now he is undergoing treatment. But we never knew that he has cystic fibrosis carrier, Can someone tell me more about its symptoms and can it be cured by treatment?What are the odds that my child who has shown no signs of problems could have been born with cystic fibrosis carrier and may have developed it later on in life?