> we still aren’t telling the public that room air purifiers are a ‘good thing’ (for making indoor air like outdoor air - in regards to virion density per cubic

> we still aren’t telling the public that room air purifiers are a ‘good thing’ (for making indoor air like outdoor air - in regards to virion density per cubic air volume) > The filter technology is essentially the same as in the N95 So, due to the very small size of this virus, in microns. Most air filters on the market are still not good enough. HEPA isn't good enough, is it better than nothing? Yes but not much. A MERV 14 isn't good enough. I've seen some promising UV light tech but...AC units are pretty ill equipped for this virus. I'm even curious if studies have been done in hospitals have the equipped AC filtering system to stop this virus. Air flow and filtration is a tradeoff currently. Try to blow out a candle with an N95 mask. It's extremely difficult. The filter technology is not the same. > orders of magnitude more effective than cloth masks Cloth masks help about 40% reduction, surgical masks 80%, and N95...95%. I find it very annoying that governments are encouraging cloth masks because they could be use their size and buy surgical masks for everyone at a very cheap cost (economies of scale). Also, the creator of N95 masks got out of retirement and found that if hospital workers had 7 masks, one for each day. Just rotating them in the storage closet is very effective to reusing them without contamination.