Black technology in masks: Does the activated carbon layer really prevent viruses?

🦠 Moment of truth:

PM2.5 filtration rate: 95% ✔️

New coronavirus blocking: Ineffective ❌ (melt-blown layer electrostatic adsorption is required)

📊 Data: N95+activated carbon = breathing resistance increased by 30%

🔗 #Public Health #Epidemic Prevention Knowledge #Material Engineering