Apartment ventilate in calm weather

Sometimes it is difficult to exchange the air in the apartment when there is complete calm, eg. B. in winter at high pressure. But then you do not want to leave the windows open for half an hour because of the cold.

In this case, I have opened all the windows wide and in the kitchen the cooker hood open the whole pot. After a minute or two, I close the kitchen window, leaving the kitchen door open, so that the air is sucked in from the rest of the rooms.

If you then have an internal bathroom with forced ventilation, briefly turn on the light, only until the ventilation starts and the doors open wide.

After 5 minutes at the latest, the air in the apartment is completely replaced.