4 ms·
Surgical masks are designed to stop droplets, not aerosols so they're pretty loose. The mask is not form fitting around the nose. OR's also have dedicated filtr
by shadilay 5y ago
Surgical masks are designed to stop droplets, not aerosols so they're pretty loose. The mask is not form fitting around the nose. OR's also have dedicated filtration/HVAC systems with HEPA filters. I researched this when I was looking for a filter system for wildfire smoke.