These N95 masks are less than $1 each on Amazon today
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.
3M™ VFlex™ Particulate Respirator 9105, N95, 400 EA/Case | 3M United States