3 ms·
If your glasses are fogging up, the mask is leaking around your nose or cheeks.
by kps 6y ago
If your glasses are fogging up, the mask is leaking around your nose or cheeks.
- brixon 6y agoThat is only a concern for medical grade masks. Most masks that people wear are to slow down the air, not filter the air.
- kps 6y agoIt is also a concern for people whose glasses fog up.
- chongman99 6y agoThis is not technically true (but often true). Water vapor is a gas and is much smaller than the "leaks" of particles. A perfectly sealed filter (like an elastomeric mask with high fit factor) will still release a ton of H20. EVIDENCE: The exhaust from PAPRS and viralhelmets.com has a ton of moisture.