A member asked:

Is there any evidence for the use of a surgical mask for protection from pm 2.5 particles if you have mild asthma in high pollution in se asia ,or could it cause more harm than good from bacteria to form from exhaling in 33 degrees humid city?

A doctor has provided 1 answer
Dr. Amrita Dosanjh answered

Specializes in Pediatric Allergy and Asthma

Dust mask: A mask designed to avoid dust and particulate matter is often used to reduce exposure. The masks are often found in hardware stores that sell paint and construction materials. The mask must be changed to avoid saturation. A HEPA filter unit inside and in your car also may be helpful. Avoid smoke, pollen and mold.

Answered 2/7/2020

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