Respirator is used when air quality is low. It is required to protect people from breathing contaminated and hazardous air particles.
The main objective of the respirator is prevent exposure to air contaminated with harmful dust, vapors, chemicals, fog, fumes, mists, gases, smokes, pesticides and other harmful gases that can cause severe illness.
Read more here https://mybreathbuddy.com/blogs/blog/when-would-you-use-a-respirator
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