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Q&A Rigorous Science Meta
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Q&A Atmosphere that makes people wear masks for breathing

(I'm new here, so I apologize in advance if I do something wrong) TL;DR of what I'm looking for: A substance (natural or artificial) that... can be suspended in an atmosphere is harmful to bre...

3 answers  ·  posted 5y ago by Ramo'sBored‭  ·  last activity 5y ago by Ramo'sBored‭

Question environment atmosphere