sweat and tears taste like salt is a main one, bringing up mucus, getting short of breath easy, poo oily or constipated as your not taking creon so digestive system is bad.. to be honest theres different cases of cf if you think you or someone else has cystic fibrosis your better off taking them to a doctor and asking them for a test and dont leave until they send you for one dont let them use the excuse that its not known in your family as it was not known in mine but my mum still didnt take no for an answer and it turned out i had it... i hope this helps