It smells musty,
the air goes stale,
when windows not opened,
and room remain sealed.
Lüften...
A ritualistic German practice,
of airing out their houses,
for, being well-insulated,
they retain moisture inside.
With high CO2 concentrations,
we are exposed to VOCs indoors,
while our activities and routines,
build up humidity and moisture.
All these gases and odors,
with breeding ground of molds,
create dangerous conditions,
for our health to suffer.
So, we need to open doors,
unlatch windows for ventilation,
welcoming the flowing breeze,
ensuring adequate air circulation.
There's might be some concerns,
of letting dust, or pollutants enter,
while harsh climate or weathers,
making it harder to practice.
Lüften...
In the era of sealed architectures,
we can utilize it as our solutions,
Like Stoßlüften, shock ventilation,
Or Querlüften, as cross ventilation.
PS.
Lüften : German practice of airing out a house.
Stoßlüften : Open window completely for 5-10 minutes. Allow quick air exchange without chilling the window.
Querlüften : Open all window and doors to create a draft. Replaces indoor air in few minutes.
CO2 : Carbon Dioxide.
VOCs : Volatile organic compounds emitted from paint, carpet, furniture and cleaning supplies.