👉 Inner fumes refer to a complex and often unpleasant mixture of gases and vapors that can accumulate within enclosed spaces, such as basements, crawl spaces, or poorly ventilated rooms. These fumes are typically produced by chemical reactions, decomposition processes, or the presence of volatile organic compounds (VOCs) from sources like paints, solvents, cleaning agents, and even natural materials like wood or drywall. As these substances break down or react, they release noxious gases that can irritate the respiratory system, cause headaches, dizziness, nausea, and in severe cases, lead to more serious health issues. The odor of inner fumes is often described as acrid, metallic, or chemical, making them difficult to ignore and necessitating proper ventilation or professional remediation to ensure a safe indoor environment.