Fuck off
Where is your proof that they help anything but rebreathing your own carbon dioxide? Got any double blind expiriments or studies to back that up? Uncountable hey? How bout your statement in UNACCOUNTABLE, thats more fucking likely.
If you think most Canadians are Liberal and like Trudeau then you are even less intelligent then I even gave you credit for to begin with. #gohomeblackface
I’ve posted tons on both the differences and the limitations of respirators and source control masks here now and people should reference it.
The CO2 issue is simply not true. Neither masks nor respirators cause anything remotely close to hypoxia or any other potentially life threatening conditions. Barring pre existing cardio pulmonary issues or perhaps separate severe respiratory conditions or illnesses.
Mask microclimate and the psychological issues that it can create, especially in hot humid environments is worthy of discussion. However this stems largely on psychological factors.... not actual physical ones. As long as the respirators or masks are maintained, not damaged and worn properly.
To be fully transparent there has been no studies done on source control masks aka these cloth things people are wearing. However keeping that in mind their filtration efficacy is much lower than both surgical masks and respirators.... therefore the respiratory function should be less impacted. I suppose someone could go crazy overkill with the layers and potentially cause breathing issues.... but I think that mask looks more like a pillow than a mask.
Any studies that have been run do indicate that CO2 retention levels in blood can be higher in those wearing respirators. But no so much that they have any impact on either short or long term health. And as I stated earlier no indications of hypoxia.
I’m not taking the position that masks should or shouldn’t be worn by the general public.
I think it is very important however to understand the philosophy behind protective masks and respirators and source control masks.
All may have a place in the broader scope of infection control. There has not been enough time to develop any reasonable data on source control masks. This is s relatively new concept.
However if anyone has read the sars commission report one main takeaway was that public and worker protection standards while in outbreak of unknown disease should rely on the precautionary principle rather than relying on documented peer reviewed empirical evidence to drive risk management standards to be employed.
If someone wants to talk masks and respirators what they do and don’t do please reach out. I’m not any court designated expert on the matter..... but I probably have a better understanding of this topic than 98% of the general public. Those that know me best will know why I feel comfortable saying this.