How many masks can you use in a day?

As a professional practitioner in the field of cryptocurrency and finance, I'm often asked questions about the intricacies of digital assets and market trends. But today, I'm faced with a unique inquiry: 'How many masks can you use in a day?' This question seems to be a departure from my usual realm of expertise, but let's approach it with the same level of curiosity and analytical rigor. Clearly, the questioner is referring to protective masks, perhaps in the context of COVID-19 prevention measures. So, how many masks are appropriate for daily use? Is there a limit? Does it depend on the type of mask or the wearer's activities? Let's delve into this unusual yet timely question and see what insights we can gain.