The 2019–20 coronavirus pandemic resulted in some requirements to wear face masks.
   
“Can I find just one mask that doesn’t smell like bad breath?” was posted on Twitter by Padraic Defino on April 16, 2020. “Ugh does anyone know where I can get a face mask that doesn’t smell like bad breath?  Every damn one” was posted on Twitter by Anthony Downs on June 16, 2020. “Where can I buy a face mask that doesn’t smell like bad breath?!” was posted on Reddit—3amjokes on July 23, 2020.
   
That is, the person smells their own bad breath, no matter what face mask is used.
   
 
Wikipedia: 2019-20 coronavirus outbreak
The 2019–20 coronavirus pandemic is an ongoing global pandemic of coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The outbreak was first identified in Wuhan, Hubei, China, in December 2019, and was recognised as a pandemic by the World Health Organization (WHO) on 11 March 2020.
     
Twitter
Padraic Defino
@PaddyDefino
Can I find just one mask that doesn’t smell like bad breath?
5:13 PM · Apr 26, 2020·Twitter Web App
   
Twitter
Anthony Downs
@anthony_downs
Ugh does anyone know where I can get a face mask that doesn’t smell like bad breath?  Every damn one.
3:43 PM · Jun 16, 2020·Twitter for iPhone
   
Twitter
justin
@justindunphy_
When are they gonna make a face mask that doesn’t smell like bad breath?
8:29 PM · Jul 21, 2020·Twitter for iPhone
 
Reddit—3amjokes
Posted byu/smrkk July 23, 2020
Where can I buy a facemask that doesn’t smell like bad breath?!
...oh.