No studies have been done to demonstrate that either a cloth mask or the N95 mask has any effect on transmission of COVID-19. As a matter of fact, research published in the Annals of Internal Medicine at the first of April indicated that “both surgical and cotton masks seem to be ineffective in preventing the dissemination of SARS–CoV-2 from the coughs of patients with COVID-19.
In a February 2020 meta-analysis of six randomized controlled trials involving 9,171 patients, there were no statistically significant differences in preventing influenza or viral infections using N95 respirators and surgical masks.
In a 2008 study of surgical masks worn by 53 surgeons, researchers found that the mask reduced the blood oxygen levels significantly, creating a condition known as “hypoxia.”
A 2015 study indicated that hypoxia inhibits T-lymphocytes (the main immune cells used to fight viral infections) by increasing the level of a compound called hypoxia inducible factor-1 (HIF-1). In other words, wearing a mask, which has been shown to cause hypoxia, may actually set the stage for contracting COVID-19 and make the consequences much worse.
Hypoxia promotes inflammation which can promote the growth, invasion and spread of cancer. Hypoxia is also a significant factor in atherosclerosis, thus it increases the risk of stroke and heart attack.
Those who wear masks are constantly rebreathing the viruses, raising the concentration of the virus in the lungs and the nasal passages. By wearing a mask, the exhaled viruses will not be able to escape and will concentrate in the nasal passages, enter the olfactory nerves and can travel into the brain. (Reference) https://pubmed.ncbi.nlm.nih.gov/32167747/
The WARNING on the box of surgical masks states clearly “THIS PRODUCT WILL NOT PROVIDE ANY PROTECTION AGAINST COVID-19 (CORONAVIRUS) OR OTHER VIRUSES OR CONTAMINANTS.”
Anthony Fauci, head of the director of the National Institute of Allergy and Infectious Diseases (NIAID), did an interview on 60 Minutes where he said, “People shouldn’t be walking around wearing masks.”