Additional filter holder for FFP2 mask valve

thingiverse

I use the Portwest FFP2 face mask which has a valve that allows me to breathe more easily. However, I've noticed a problem - when I exhale, my breath escapes through the valve and can potentially infect others. This is why I designed an adapter to press a filter sheet over the exhalation valve. By doing so, I can filter out any airborne pathogens from my breath. After testing it for some time, I found that it does make exhaling slightly more difficult, but it's still usable.