Fine dust has been bad for several days now.
In this case, is it better to ventilate or not?
249 2018-11-05 Gentleman
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A. 1
I know that it's good to do it no matter how bad it is
Gentleman 6 years ago 0
OK
A. 2
It's better to do itBecause of carbon dioxide or radon
A. 3
It's almost closed for a few days. I need to ventilateThank you.
A. 4
It's definitely good to do it
A. 5
No matter how bad the air is, it's better than indoor air
A. 6
It's right to ventilateThank you for the good information
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