Quote:
Originally Posted by pmax
Well well ...
With nowhere for exhaled carbon dioxide to escape, N95 wearers sometimes suffer dizziness or headaches.
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I was at the dentist last week because a filling cracked and some broke off. The dentist had the usual face shield that she has been wearing for years, but now with a paper M95 style mask covering nose and mouth. She had a small maybe 3/4" corrugated tube running into the mask from somewhere under her doctor's smock. I meant to ask but forgot.
I assume this kept a slight positive pressure inside the mask. If nothing else, it would have provided enough circulation to prevent fogging inside the shield. And blow away the CO2.
Or it could have been a vacuum and that's why I should follow up and see if I can find out. I like it.
Edit: I found it.
https://www.amazon.com/BROAD-Rechargeable-Electrical-Purifying-Respirator/dp/B07YWLBVF2/ref=pd_lpo_79_t_2/140-2612504-6837429?_encoding=UTF8&pd_rd_i=B07YWLBVF2&pd_rd_r=2fa8ef5d-27f8-4e1f-bea3-28b70c417c7d&pd_rd_w=cHpf0&pd_rd_wg=AyVUP&pf_rd_p=7b36d496-f366-4631-94d3-61b87b52511b&pf_rd_r=H6VWBGC4ZGYT4S718F3E&psc=1&refRID=H6VWBGC4ZGYT4S718F3E