Wow, that's EXPENSIVE! No wonder hardly anyone has one of these.

How expensive is it to buy and use this Pluslife testing device?

This is great, but how soon will this be available to the general public?

WHAT? How can the people who know better not wear masks?

YES! The 3M Aura is one of my favorite masks because it's effective and comfortable.

Is there a way to get rid of these microplastics from our bodies?

Shredded Wheat with fruit is magically delicious! :)

I'm sharing my mask fit testing procedure and my opinions on various masks so that you don't have to reinvent the wheel.

The fact that most people are taking NO precautions can only make it more important to follow precautions. My top two tiers contain the most obvious/proven/no-brainer precautions. The precautions on the left are the most convenient ones.

Which elastomeric respirator are you using that allows you to add an exhalation valve filter? My 3M 7502 is good, but I haven't figured out a way to add a filter for the exhalation valve.