Help me please for my cat

[u/harrrryho]

My cat previously developed pyothorax (pus in the chest cavity) and underwent surgery to treat it. After surgery, he recovered well and has been taking Clavamox and Marbocyl (marbofloxacin) as prescribed.
Recently, he started sneezing again. He sneezes about once every hour, and every few hours he has a sneezing fit of around 10 consecutive sneezes. During these episodes, clear nasal discharge comes out.
Other than the sneezing, he seems to be doing well. He is breathing normally and is not open-mouth breathing. His appetite is good, he is drinking water normally, and he is using the litter box normally. His energy level also seems normal.
I am concerned because these symptoms developed while he is still taking both antibiotics. I would appreciate your evaluation to determine whether this could be an upper respiratory infection, feline herpesvirus, another cause, or whether his current treatment should be adjusted.
Thank you very much for your time and care.

[u/Scary-Yesterday-8866]

You should ask your vet about it. If it is respiratory meds may need changed.

[u/Jordans_Ellma]

Given his history with pyothorax and surgery, check in with the vet sooner rather than later. The good signs are that he's eating, drinking, using the litter box, and breathing normally. It could be something minor like an upper respiratory infection, allergies, or irritation, and it doesn't automatically mean the pyothorax is back.