the things they give to kids should be criminally punishable.
salt. if you have a good natural Sea Salt , put it in a paper bag and shake it to create fine dust in there. then put the opening of the bag over the mouth and breath down into the lungs.
another thing is to put oregano oil in the humidifier. just a drop or two will do.
iodine in orange juice is really good for congestion. about 50mg for every ten pounds of body weight. orange juice reduces the Iodine to iodide. several with lung problems have tried this lately with good success. they used to do it all the time back in the day. KI will bust the lungs loose for sure.