In Dubai’s climate, constant AC use leads to significant condensation. A leaking unit provides a continuous moisture source, and the enclosed space behind your wardrobe creates the stagnant, humid environment where mold thrives. The “black, fuzzy” description and its size indicate an active colony that is likely releasing spores into your bedroom air.

For any mold patch larger than a square foot (about the size of a standard A4 paper), professional remediation is strongly advised, especially when the source is an ongoing leak. Disturbing it yourself can aerosolize a high concentration of spores, potentially causing respiratory irritation, worsened allergies, or sinus congestion. A certified inspector can properly contain the area, identify the exact mold species through lab testing, and remediate it according to DHA-aligned protocols to ensure it is effectively removed and the underlying moisture issue is resolved. Contact your landlord immediately, emphasize the active water leak and health concern, and request a certified mold assessment. Do not attempt to clean it yourself.