I also had one of those masks that fit around the face with rubber parts and have replaceable filter modules. I used the VOC filters when spraying herbicide, and found that with the mask on, I couldn't smell the stuff, so I figured it was working pretty well. With just the P-100 particulate filters, VOCs come through, but according to …
I also had one of those masks that fit around the face with rubber parts and have replaceable filter modules. I used the VOC filters when spraying herbicide, and found that with the mask on, I couldn't smell the stuff, so I figured it was working pretty well. With just the P-100 particulate filters, VOCs come through, but according to NIOSH, the reason the spec on those is for 100% of 0.3-micron particles is that smaller particles are *easier* to filter, due to the way particles interact with air at that scale. So I felt safe going into spaces with possible sick people (before I decided that my nutritionally-supported immune system was up to the task of fending off this virus). The downside of those masks, public-health-wise is that they don't filter exhaled air particularly well.
I also had one of those masks that fit around the face with rubber parts and have replaceable filter modules. I used the VOC filters when spraying herbicide, and found that with the mask on, I couldn't smell the stuff, so I figured it was working pretty well. With just the P-100 particulate filters, VOCs come through, but according to NIOSH, the reason the spec on those is for 100% of 0.3-micron particles is that smaller particles are *easier* to filter, due to the way particles interact with air at that scale. So I felt safe going into spaces with possible sick people (before I decided that my nutritionally-supported immune system was up to the task of fending off this virus). The downside of those masks, public-health-wise is that they don't filter exhaled air particularly well.