How should I ventilate when fine dust is severe?

fine-dust ventilation

I heard it's good to ventilate at least twice a day for 30 minutes.

Then what should I do when fine dust is severe like these days?

Would it be better not to do it at times like this?

461 2018-03-25 Gentleman

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A. 1

But I heard it's better to do it

Gentleman 7 years ago 0

A. 2

Fine dust is a problem, but if you don't ventilate, you can't ventilate carbon dioxide and radon, so it's good to have bad fine dust

Gentleman 7 years ago 0

A. 3

Even if there's fine dust, I recommend that you ventilate and clean it with an air purifier

Gentleman 7 years ago 0

A. 4

SKY

Gentleman 7 years ago 0

A. 5

Thank you. I need to buy an air purifier.

Gentleman 7 years ago 0

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