Gas mask or respirator. Gas masks are used to avoid breathing air contaminated by smoke, or chemical or biological agents, such as might be used durin

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Gas mask or respirator. Gas masks are used to avoid breathing air contaminated by smoke, or chemical or biological agents, such as might be used during a terrorist attack or warfare.

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Size: 3591px × 4974px
Photo credit: © LAWRENCE LAWRY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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