When someone finds one of these simulators, what would they do?

Are you saying the consequences of xenophobic nationalism are not terrible or horrible? Xenophobic nationalists respect basic human dignity?

OP said they don’t want to pay for Hue.

I read somewhere, the suggestion, that the filter be replaced when air flow has reduced by 50% from when the filter is new. IDK, that seems reasonable to me and should be measurable.

I have always replaced filters on a schedule, but it has always felt wasteful. Sometimes the filter is clearly dirty and sometimes it is not. I would like something more specific.

I will look into PMS7003.

Does he come from France?