Why can you still smell things wearing an effective #mask?
You can #smell some nasty things like #smoke and rotten eggs even with fit tested #N95 #respirators which block tiny viruses/bacteria because the smell molecules have atomic masses that are 17 million times less than a #virus . 🧵 1/
The one page easier to share version of this thread can be found at: https://threadreaderapp.com/thread/1728039593700647259.html
Follow
In some cases bad smells such as Methane could indicate a gas leak for example. So not being able to smell this, would not protect you from setting the gas or from a spark, even a light switch or lighting a match can do that.
