That headline is referring to a common issue: drying clothes indoors can increase moisture in the air, which encourages mould growth—especially in poorly ventilated spaces.
Why indoor drying causes mould
When wet clothes dry, they release a lot of water vapor into the air. This raises humidity, and if that moisture settles on cold surfaces (walls, windows, ceilings), it can lead to mould exposure and visible mould patches.
The “15-minute trick” they’re talking about
Articles like this usually suggest a quick ventilation method, such as:
- Open windows wide for 10–15 minutes
- Create a cross-breeze (open doors/windows on opposite sides)
- Do this right after hanging clothes
This rapidly removes humid air and replaces it with drier air, reducing the chance of condensation.
Other practical tips
- Dry clothes in one room only (not all over the house)
- Use an exhaust fan or dehumidifier
- Keep clothes away from walls
- If possible, dry near an open window or balcony
- Avoid drying in bedrooms overnight
Bottom line
The “trick” isn’t magic—it’s just short, effective ventilation. Even a quick 10–15 minute airflow burst can significantly cut moisture buildup and lower mould risk.
If you want, I can suggest the best indoor drying setup for your specific space (room size, weather, etc.).