Indoor refuge offers partial shield from haze, experts caution

KUALA LUMPUR — As haze conditions return to Malaysia, many residents are turning to indoor sheltering as a primary defence mechanism. Health experts acknowledge that remaining inside can significantly reduce personal exposure to outdoor air pollutants, making it a practical first-line approach during periods of poor air quality.

However, scientists caution that simply staying indoors does not guarantee complete protection from atmospheric pollution. According to environmental health specialists, outdoor air pollutants can penetrate indoor spaces through ventilation systems, open windows and doors, and gaps in building structures. Fine particulate matter, a primary concern during haze episodes, is particularly susceptible to infiltration.

Experts recommend that Malaysians combine indoor sheltering with additional protective measures to maximise health benefits. This includes keeping windows and doors closed during peak pollution hours, using air purifiers with HEPA filters, and monitoring real-time air quality indices to determine when outdoor activities should be minimised.

Vulnerable populations, including children, the elderly, and those with respiratory conditions, face heightened risks during haze periods and should exercise particular caution. Health authorities continue to advise residents to check daily air quality reports and adjust their activities accordingly, rather than relying solely on indoor confinement as a complete solution to pollution exposure.