Masks Masquerading as ScienceTM.
I spent a good part of my career engineering emulsion PCR and Nebulization equipment for DNA and RNA shearing. I have a very different view on this topic and have mostly stayed out of the debate as it's now cultish.
My largest concern over mask studies is most of them fail to include live virus in the study and measure the infectivity of the particles on the inside and outside of the masks, the fomite formation, and the microbiome risks associated with non-sterile technique mask use.
The focus as been myopic ironically. It is focused on the reduction of large droplets while failing to consider if the larger droplets are getting nebulized into smaller ones.
If you study the field you will see viral nebulization is a technique used to get higher infectivity of viruses. This is used with ventilator patients suffering from pseudomonas aeruginosa infections. Nebulize bacteriaphage to get deep into the lungs and kill bacteria.
In fact products exist on the marketplace to nebulize medicines because aerosols get deeper into the lungs than large droplets.