@reinhilde @jon_giraffe I think anything that is reusable will have cleaning requirements.

That said… I went the #Elastomeric route because the idea of generating a mountain of plastic waste from single-use masks did not sit well with me.

As an asthmatic, I also found unvented masks really gave me breathing difficulties. A vented mask worked better, and while there are single-use #N95 masks with vents, typically the vent is unfiltered and can't be easily retrofitted with a filter.

I went a Honeywell/North RU6500M (#FullFaceElastomeric) at first because I saw one going cheap … and it's been good, but it is a bulky option, so managed to find a Honeywell 7700 (#HalfFaceElastomeric) which uses the same filters (I have both #N95 / #P2 and #N100 / #P3 filters) but is less vulnerable to scratches.

Both I was able to reversibly modify to add an exhaust filter: typically I use disinfectant wipes to wipe down the mask inside and out… and if I fold one of those wipes three times over and cut it to size… it makes a passable exhaust filter.

At the moment I'm mostly masking during the winter months when cases are at their worst and the inconvenience is at its lowest. (Yes, I know COVID-19 is not seasonal, however behaviour and the immune system load from seasonal infection in winter months, raises the risks at that time.)