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Topic	If you breathe through your nose, while wearing a face mask.
adjl 07/04/20 3:11:06 PM #96:	Revelation34 posted... https://www.azdhs.gov/preparedness/epidemiology-disease-control/infectious-disease-epidemiology/covid-19/dashboards/index.php There's still moisture in people's breath in Arizona. The transmission range is going to be lessened compared to a more humid environment, since those droplets will dry up faster, but the exact difference is pretty hard to quantify and isn't likely to be enough to rely on, so that point isn't particularly relevant except to say that beachgoing isn't a great idea (high, sustained winds and higher humidity increase transmission range). Revelation34 posted... No that's actually false. Full protection is from specific masks. Complete, 100% protection would indeed involve a full hazmat suit with a full-face SCBA (even then, that's not perfect, but it's close enough), yes, but nobody has ever suggested that wearing something more readily available to the average consumer provides perfect protection. Just that it's better than nothing, which is a claim that's both well substantiated and intuitively obvious. wolfy42 posted... Logically if you breathe in through your nose and out through your mouth, you should be just protecting others just as good as if your nose was covered as well. Hypothetically, sure, but the vast, vast majority of people don't breathe like that by default. Relying on that as a protective measure would require people to pay conscious attention to their breathing at all times while in risky areas, which is actually quite a lot to expect of people and therefore wouldn't be overly reliable. The nose also isn't sealed off while breathing through the mouth (distinct from breathing through the nose, where the mouth does get sealed off), so even exhaling through the mouth, you're going to get some air coming out through the nose. The only way to really make that idea work would be with some kind of external valve system that somehow prevented air from leaving the nose while exhaling while also preventing the person from breathing in any other way. At that point, you might as well just wear a normal mask that would be much simpler, cheaper, and provide better protection anyway. --- This is my signature. It exists to keep people from skipping the last line of my posts. <cite>adjl posted [p:941669516] in If you bre... [t:78820348]...</cite> <quote>Revelation34 posted... </cite> <quote>https://www.azdhs.gov/preparedness/epidemiology-disease-control/infectious-disease-epidemiology/covid-19/dashboards/index.php</quote> There's still moisture in people's breath in Arizona. The transmission range is going to be lessened compared to a more humid environment, since those droplets will dry up faster, but the exact difference is pretty hard to quantify and isn't likely to be enough to rely on, so that point isn't particularly relevant except to say that beachgoing isn't a great idea (high, sustained winds and higher humidity increase transmission range). Revelation34 posted... </cite> <quote>No that's actually false. Full protection is from specific masks.</quote> Complete, 100% protection would indeed involve a full hazmat suit with a full-face SCBA (even then, that's not perfect, but it's close enough), yes, but nobody has ever suggested that wearing something more readily available to the average consumer provides perfect protection. Just that it's better than nothing, which is a claim that's both well substantiated and intuitively obvious. wolfy42 posted... </cite> <quote>Logically if you breathe in through your nose and out through your mouth, you should be just protecting others just as good as if your nose was covered as well.</quote> Hypothetically, sure, but the vast, vast majority of people don't breathe like that by default. Relying on that as a protective measure would require people to pay conscious attention to their breathing at all times while in risky areas, which is actually quite a lot to expect of people and therefore wouldn't be overly reliable. The nose also isn't sealed off while breathing through the mouth (distinct from breathing through the nose, where the mouth does get sealed off), so even exhaling through the mouth, you're going to get some air coming out through the nose. The only way to really make that idea work would be with some kind of external valve system that somehow prevented air from leaving the nose while exhaling while also preventing the person from breathing in any other way. At that point, you might as well just wear a normal mask that would be much simpler, cheaper, and provide better protection anyway. --- This is my signature. It exists to keep people from skipping the last line of my posts.</quote> ... Copied to Clipboard!
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