In the UAE context, humidity levels can fluctuate significantly, making basements particularly prone to moisture accumulation post-rainfall events such as you experienced last month. The use of dehumidifiers is a good start but may not be sufficient in all cases, particularly when the basement environment remains excessively damp.

From a technical standpoint, mold growth requires three basic conditions: moisture, food source (commonly cellulose found in wood and paper products), and time. Your storage room’s location makes it more susceptible to these factors. Considering the UAE-specific regulations that prioritize health and safety standards, it would be prudent to conduct a professional inspection to assess the extent of any potential mold growth.

Early signs of mold include discoloration or dark spots on surfaces, musty odors, and visible growth. Given your symptoms (coughing), there’s an increased likelihood of mold spores being present in the air, which can exacerbate respiratory conditions.

Recommendations:
1. Professional Inspection: Engage a certified environmental inspection company to assess the basement area thoroughly. This is particularly important given the UAE’s stringent building codes and health standards.
2. Remediation Steps:
– Ensure adequate ventilation: Open windows if possible, or install exhaust fans to reduce humidity levels.
– Dehumidify effectively: Consider advanced dehumidifiers with higher capacities than standard ones.
– Source control: Seal any leaks promptly, and address areas of moisture intrusion like around pipes or the foundation.
3. Preventive Measures:
– Regularly inspect for signs of dampness or mold growth.
– Maintain low humidity levels (ideally below 60%) to discourage mold development.

For immediate assistance in Dubai/UAE, you can contact professional services such as Saniservice at 800-MOLDS (800-66537) or via email hello@saniservice.com. They offer comprehensive mold inspection and remediation services tailored to the local environmental conditions.

In conclusion, addressing this issue promptly is crucial for both immediate health concerns and long-term property preservation.