Microbiology None of the following are true about N95 masks except A They were designed for influenza viruses during the H1N1 outbreak B N- stands for National Institute of Occupational safety and Health C It filters 95% of all paritcles smaller than 3nm D A beard doesn't allow for a proper seal and makes the N95 ineffective 💡 Explanation None of the following are true about N95 masks except ✓ Correct Answer: D. A beard doesn't allow for a proper seal and makes the N95 ineffective