slimelung quantity

Hi ! Here is something that looks like a bug.

I have some morbs and extract polluted oxygen from them, then send then to pufts. On this everything is okay

To prevent slimelung I use water to keep temperature under 13° constantly, so I don't have germs.

I don't understand why, but oxygen is looping really a long time before being decontaminated, Showing non polutted oxygen on the first look but.

When you put germs overlay it show some kind of "1 germ" that seems really hard to kill