Ziad Hazim Deleme There must be. When we use N95 mask, our SpO2 falls, feel asphyxiated and sometimes severe headache occurs.

Practically, nobody has reported any type of discomfort using the mask all the day. This is with regards to our area and region.

Could be but if we look at the pore size, we cant get benefit from the virus by keeping even N95 mask on, as the pore size is 300nm and virus 100nm....look at the obvious things

maybe but nobody has reported this discomfort of the mask using

There is no such evidence that N95 masks cause hypoxia or any other abnormality in body. Till now, there are no reported adverse effect on brain or heart functioning seen amongst users. It however, increases breathing/ nasal resistance and breathing exhaled air over and over again can make one feeling dizzy. Prolonged use of tight-fitting face masks, however, can cause severe headaches.

Any side-effects due to N-95 masks are acceptable if you do not want to jeopardize or lose your life!

The side-effects of N-95 masks are related to duration of their continuous use or inappropriate fitting mask. If judiciously used side-effects can vary from claustrophobia to skin injury, and in the worse scenario as described (1).

However, these side-effects are nothing compared to jeopardizing or losing the life due to non-use in high-risk hospital situations particularly during procedures in the COVID-19 patients during their stay in ICU.

Remember: Any loss will heal except death.

1. https://www.cureus.com/articles/44543-orbital-conjunctival-eyelid-hemorrhage-hematoma-due-to-inappropriate-use-of-ffp2nk95-facial-mask-in-covid-19

Take a look at these useful RG links.

Article Respiratory consequences of N95-type Mask usage in pregnant ...

Article Respirator masks protect health but impact performance: A review

Article The physiological impact of wearing an N95 mask during hemod...

Please also see the following attached articles.

Prolonged use of mask causes hypoxia, oxygen deficiency, fatigue and loss of reflexes