My nephew and one of my nieces are. I use to live with them and it was a pain with my nephew. He has to use his machine about every 2-4 hours when needed. Just that he hates his mask so we would just hold him down and have the steam blow in his face. He also has asthma and one of his lungs has problems with it so when he gets sick its bad. I had to stay in the hospital with him for over two weeks because he got sick with RSV once and my sister was stuck in the hospital having baby number five.