I know many people here have become concerned that fecal->oral and fecal->respiratory are possible important vectors for COVID-19. Even if the bulk of spread doesn't happen this way, it's a way to get distant, unconnected cases that will not show up on contact tracing and stymie efforts to contain the disease. This was a major issue during the 2003 SARS outbreak.where hundreds of cases were caused by this mechanism.

I have been in commercial bathrooms where I smell sewer gases coming up from floor drains; exacerbated by the exhaust fans in the restroom. It's not uncommon.

Has anyone been in contact, or have any public health contacts, about this? It seems like a really easy problem to mitigate (pour a couple cups of water down the drain). The public is looking for ways to protect themselves, and this one is something easy that could be put in an advisory.