![]() ![]() Note that this is a qualitative not quantitative test. In other words, all masks were tested until they failed, even if they passed the standard tests. Only one of my masks survived that last test, so I shoved a pen between it and my face as the last step, to force a failure. Turning head side to side and up and downĪt the end of their tests, I added more more step: I followed their instructions, specifically testing: I first tried the sweet version, but wasn’t sensitive enough (I drink too much diet Coke desensitizing me, probably). I bought two of these mask fit test kits. You can watch the training videos on YouTube to see how this works. ![]() ![]() If you can taste it through your mask, then the mask isn’t working. The fit tests work by spraying either saccharine (sweet) or bitrex (bitter) in aerosol form into a hood around your head. Small gaps that let air in lead to big differences in efficacy. Their requirements aren’t just the type of mask but also regular checks to see if it fits without any gaps. The standard for medical use, for maximum efficacy, is a fit tested N95 elastomeric respirator. Finding the best fit/comfort can be difficult. You will probably have to try out multiple masks, so do this with friends, with each buying different mask (often $30) for trials, then pass them around to so that each person can try multiple masks. I recommend you start with something NIOSH N95 certificated like 3M Aura N95 and move on from there until you find one that seals comfortably on your face. You are probably going to limit your choices to what’s socially acceptable (disposable N95 rather than plastic). Get one that fits comfortably for long term use. Get one that seals (fits) your face with no gaps - almost certainly a behind-the-head mask instead of behind-the-ears. Throw out your cloth/surgical masks and use N95 instead - the difference is huge. The TL DR is that if you care about efficacy: Therefore, I did some simple testing of the efficacy of masks, to help give some perspective on the topic. Since Omicron variants like BA.5 are highly infectious, people are likely to care about efficacy of masks, in contrast to past events where people primarily cared about compliance. They won’t be checking vaccine status, but they will be requiring masks. Next month will be the annual DEFCON hacker/cybersecurity convention in Las Vegas, the biggest of its kind. ![]()
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