Severe or Very Poor AQI: You Should Not Step Outside Without Anti-Pollution Masks Posted By: kiran mahajan November 04, 2019 Leave a Reply A high-quality mask with a good fit can be useful in keeping pollutants, fumes, PM2.5, PM10 and other airborne viruses, away from your throat and lungs. from Top Tech News- News18.com https://ift.tt/2NznJFW Tweet Share Share Share Share
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