W - Questions.

Windows should be opened wide for 5 to 10 minutes during airing. This method ensures rapid air exchange and improves indoor air quality. Regular airing helps to effectively reduce moisture and pollutants.

Ideally, the humidity in the home should be between 40% and 60%. These values ensure a pleasant and healthy indoor climate, minimize the risk of mould growth and support well-being. Regular measurements help to maintain the optimum humidity level.

Shock ventilation should last around 5 to 10 minutes to effectively exchange the air. This method improves air quality and reduces humidity without cooling the room. Regular airing is crucial for a healthy indoor climate.

40 dB is comparable to the noise level in a quiet home or office. This volume is considered unobtrusive and pleasant, ideal for concentrated work or relaxation. It represents a low noise level that is hardly disturbing.

Dust is created by the accumulation of tiny particles from skin flakes, textile fibers, pollen and other materials. These particles float in the air and settle on surfaces. Regular cleaning and ventilation can help to reduce the amount of dust.

40 dB is about as loud as a whisper or soft background music. This volume is often perceived as pleasant and is typical of quiet environments. It allows you to concentrate without being distracted by loud noises.

40 dB corresponds to the volume of a quiet conversation or soft background noise. This volume is often perceived as pleasant and is typical for a quiet environment such as a library. It provides a good balance between silence and audible noise.

The question of how long a cold is contagious is a concern for many. Those affected are usually contagious for up to a week from the onset of the first symptoms. To protect others, you should limit social contact during this time and pay attention to hygiene to avoid spreading the cold.