This suggests that a humidity between 50-60% is optimal https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2863430/
silverdrake11
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This suggests that a humidity between 50-60% is optimal https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2863430/
I noticed this too. When wearing a bandana as a mask, humidity is building up while exhaling, causing it to be slightly damp.