@freemo @luckytran The conclusion from the article Dr Freemo cites further down in the thread is" As a conclusion we can say that, while it is evident and commonly accepted that wearing a face mask is very important for reducing the virus spread, especially in circumstances where proper ventilation and social distancing cannot be guaranteed, our study underlines that wearing a face mask is really beneficial only if it is used correctly. " https://www.nature.com/articles/s41598-022-20692-9. For a business like In-N-Out Burger that would require that an employee ought to be provided with enough masks that they can be changed regularly, and very briefly removed and replaced when the need arises to converse with someone having difficulty hearing them. Much like also ought to happen with disposable gloves.
Diseases aside better air quality is a good idea for countless other reasons too.
@freemo @luckytran We ought to have learned from the pandemic experience that we need to be much more attentive to indoor air quality, social distancing and relationships between those two. Even where we are packed in like sardines, as in an airplane, structural modifications could help. Meanwhile, I like my envo mask, with lots of replacement N95 filters