It's rainy and foggy outside in winter. What should I open in the room?

You can turn on household appliances such as air conditioners and dehumidifiers.

The rainy and foggy weather is too humid, which is easy to breed bacteria. You can turn on household appliances such as air conditioners and dehumidifiers to dehumidify the house while keeping the indoor air fresh.

When the relative humidity reaches 100%, the water vapor in the air will condense into tiny water droplets suspended in the air, which will reduce the visibility on the ground. This weather phenomenon is called fog.