"I talked to Kim about what I saw. She informed me that he wears the mask because his immune system is drastically weaker while on chemotherapy. Being around a person with a cold or the flu could be fatal. In addition his mouth has sores on it from the procedure. When he was in his first few rounds of chemo, he was at the hospital from 8 AM to 5 PM. Now he is able to go home but the procedure still takes a toll on him as well as his family."