Our cat is around 7-10 years old, and she has been getting lysine for her herpes, but recently she has been starting to sneeze really badly. Not to long ago, she was in my room sneezing, and while watching her I noticed she started breathing through her mouth. The lysine has been doing wonderfully, and she hasn't really sneezed until the other day. She has never had to breathe through her mouth before, and I am a little concerned. She is a(n adoptive) mother to one of my other cats, a 3 and a half year old, and he loves her dearly. Is there anything more I can do to help her? We tried the shower thing, and it does not help her, and unfortunately, our humidifier is not working properly.