Sewer Gas Contains Viruses
The CDC reports that there are viruses found in those nasty fumes. Common biological agents found in sewer systems may be bacteria, viruses, or parasites. And Hydrogen sulfide has been reported as the leading cause of sudden death, in the workplace.
At concentrations in air of approximately 300 ppm, H2S can be immediately deadly.
So give your family and workplace permanent protection.
Drop in a Sewer Skewer!