METRO MANILA RESIDENTS AT RISK OF INHALING 'MICROPLASTICS'br br A 2021 study suggests that residents of Metro Manila are at greater risk from inhaling microplastics through the air. In an interview, scientists from Mindanao State University - Iligan Institute of Technology said that different types of plastics suspended through ambient air are present in all 16 urbanized cities of the capital. including the municipality of Pateros.