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Nafnlaus 🇮🇸🇺🇦 on Twitter: "Thread: Mask Fit Testing This evening, I decided to put all of my masks to a proper qualitative fit test using a nebulizer, bitrex solution, and improvised hood.
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Amazon.com: 3M Aura Particulate Disposable Respirator 9211+ with Cool Flow Valve, N95, Smoke, Grinding, Sanding, Sawing, Sweeping, Woodworking, Dust, 10/Pack : Tools & Home Improvement
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