I hope she get better soon. I never have experience with cat like this but I know how it feels when having asthma. Did the vet so far give you some kind of inhaler or something? Fluid in the lungs...that something else right, at least not regular asthma.

i am planning on installing a cat door on my existing room door.

anyone know where can i get it locally?

i usually buy 4 kg over rm100+ where you get this price.

Did she already spayed or not? I only have seen this kind of behavior on non-spayed female cats especially when on heat. Cloth, plastic bag are few things that they like to pee on.

my wife and i need that window to be open so the house could be better ventilated and cooler..yes..i know down there is not a good place for him as a housecat..yesterday we bring him out, but just stay in the car since he never been out of home before with leash and harness ofc..

back to the wall..i did diy some chillout place (attached for reference) for him but on the inside..and put some spiky cat mat and till now he just put his head out from inside the wall..just hopefully he put safety 1st than his curiosity..if he still going out, then i need to put plastic net just to open the window..sigh..

...  also not good for your health if no purifier or good ventilation in the home.