3 ms·
Not if the air is filtered. https://jamanetwork.com/journals/jama/article-abstract/2771435 https://jamanetwork.com/journals/jama/article-abstract/27714...
by dangom 5y ago
Not if the air is filtered.
https://jamanetwork.com/journals/jama/article-abstract/2771435 https://jamanetwork.com/journals/jama/article-abstract/27714...