Moulds and Spores Avoidance
Moulds and the spores they produce are present both outside and indoors. They thrive in environments with warmth, oxygen, and moisture. While moulds are present year-round, they are particularly abundant during late summer and autumn.
Moulds release spores, which cause allergic reactions in people. Spores can come into contact with skin, nasal, and bronchial membranes, leading to symptoms such as rhinitis, itchy eyes, eczema, and, most importantly, asthma.
Outdoor Avoidance
- Avoid walking in wooded, leafy areas, especially after rainfall. Thunderstorms significantly increase the amount of spores in the air.
- Steer clear of rotting wood and vegetation.
- Do not spend time in buildings where hay or grain is stored.
- Avoid damp and musty buildings.
- Refrain from cutting grass, raking leaves, and turning compost heaps.
- Stay away from country areas during harvesting, particularly when it is sunny and windy.
Indoor Avoidance
- Reduce humidity by opening windows and lowering the heating.
- Clean visible mould in bathrooms, kitchens, and around windows with bleach or an approved solution.
- Close bathroom and kitchen doors when running hot water or cooking.
- Ensure proper ventilation in bathrooms and kitchens.
- Avoid drying clothes indoors.
- Avoid house plants or cover soil with pebbles.
- Do not leave mouldy food lying around.
- Leave wardrobe doors slightly open and avoid packing clothes too tightly.
- Check for mould behind wallpaper and use antifungal wallpaper paste if needed.
- Be aware that second homes or properties not regularly lived in may have high levels of mould spores.
- Ensure your tumble dryer is vented outside or use a condenser dryer.
- Replace old foam pillows and mattresses.
- Avoid burning damp wood and do not bring damp wood for the fire.
- Strip wallpaper from damp walls and address any dampness in the home.
- Remove piles of old newspapers.
- Avoid using humidifiers.
- If using a dehumidifier, maintain indoor humidity at 50-55% and clean the reservoir regularly.
- Avoid paraffin heaters and bottled gas heaters, as they generate large amounts of moisture.
This list is not exhaustive.
For more information on allergies, how to avoid them, and how to treat them, visit the following websites:
The Trust has access to interpreting and translation services. If you need this information in another language or format, please contact us at 0247 696 7216.
The Trust operates a smoke-free policy.
To provide feedback on this leaflet, please email feedback@uhcw.nhs.uk
Document History
Department: Children’s Outpatients
Contact: 27216
Updated: July 2022
Review: July 2024
Version: 4.2
Reference: HIC/LFT/1171/11






