Proper ventilation behavior without controlled residential ventilation

but not so comfortable and you still have to breathe...

I see it the same way, I have an unsettled digestion, have to fart a lot and in the bedroom in the morning there is not a tiger cage but pleasantly fresh air. Wife also happy.

Just don't expect the same quality with both options.

A proper enema would have been cheaper

He probably already got that from his wife every morning...

You guys are such jokers!

One should regularly ventilate every room where humidity can develop or increase (primarily through people, but also plants, aquariums, etc.). It is NOT sufficient to look at the hygrometer and say "oh 40% RH, so I don't need to ventilate at all." Because those devices only measure the RH at one point, namely where they are located. However, RH can be different in every corner of the room. There was once a case where mold developed in a bedroom despite daily shock ventilation (windows open, door open, cross-ventilation) because the airflow only passed narrowly through the room and the air in the entire room was not exchanged. With a fan that was additionally turned on during the ventilation, the problem was solved after 1 week.

There was once a case where mold developed in a bedroom despite daily shock ventilation (window open, door open, draft),

A case? I would say that this is nothing extraordinary and happens more often than one might think.