4 ms·
Often a real P3 respirator has a valve to prevent fogging with doesn't filter what you exhale though so you're not helping the pandemic.
by Already__Taken 5y ago
Often a real P3 respirator has a valve to prevent fogging with doesn't filter what you exhale though so you're not helping the pandemic.
- dTal 5y agoIt's not ideal of course, but I don't think it's fair to say I'm not helping. Almost nobody wears a mask that truly filters what they exhale - their main functions are to trap moisture and stop you projecting droplets with your voice. My mask does capture a lot of moisture, as evidenced by the condensation inside, and the valve redirects my exhalation sideways, so I think that's likely at least as good as the cheapy surgical-style masks which are common. Also, I tend to take the view that the best tool available to me to not spread Covid is to not catch Covid. It's apparent to me that relying on the people around me to wear masks and be sensible is not a viable strategy for avoiding transmission events. When the prevailing attitude is that the pandemic is over, I do not feel it is selfish to protect myself to the best of my ability.
- Arete314159 5y ago3M is now making a high-quality respirator that has an optional exhalation filter attachment. I forget the model number but you can find it on the grainger website.