Clothes on the radiator are dried this way to avoid humidity

A fan can help circulate the air and speed up the drying process, reducing humidity and preventing musty smells.
Avoid Overcrowding:

Don’t overload the radiator or drying rack. Leave enough space between garments to allow proper airflow, which helps them dry faster and more evenly.
Use a Dehumidifier:

A dehumidifier can be used in the room to pull excess moisture out of the air, especially if you’re drying clothes indoors for an extended period.
Choose the Right Fabrics:

Some fabrics dry more easily and don’t absorb as much moisture, reducing the chances of mold or musty smells. Consider drying lighter items or using fabric-specific drying methods for heavier clothes.
By keeping these precautions in mind, you can dry your clothes indoors without creating additional problems like humidity, mold, or musty odors.