What is the Source of Strange Sewer-Like Fumes Causing Reactions?

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SUMMARY

The discussion centers on the challenges of sealing against sewage gases, particularly hydrogen sulfide (H2S), and the effectiveness of various materials. Participants emphasize that airtight seals in containers are not solely dependent on metal-to-metal or metal-to-glass contact, but often involve intermediate layers. They highlight that hydrogen can diffuse through many metals, while larger gas molecules like H2S diffuse more slowly. Effective solutions discussed include the use of food-grade 304 stainless steel, polyethylene films, and the importance of proper ventilation to mitigate gas infiltration.

PREREQUISITES
  • Understanding of gas diffusion principles, particularly regarding hydrogen and hydrogen sulfide.
  • Familiarity with materials such as food-grade 304 stainless steel and polyethylene films.
  • Knowledge of plumbing systems, including P traps and vent stacks.
  • Basic concepts of ventilation and air circulation in buildings.
NEXT STEPS
  • Research the properties and applications of food-grade 304 stainless steel for gas sealing.
  • Learn about the effectiveness of polyethylene films in blocking gas diffusion.
  • Investigate ventilation strategies to prevent gas accumulation in dwellings.
  • Explore the use of ozone generators and their implications for air quality and gas conversion.
USEFUL FOR

This discussion is beneficial for homeowners, builders, and contractors dealing with gas infiltration issues, as well as environmental engineers focused on air quality and material science.

  • #31
And then return it?
 
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  • #32
No, this one would be a keeper. I tried to attack the video but this site only attaches photos.
 
  • #33
Do you know if the multi-gas detectors that firemen use, can detect carbon disulfide?
 
  • #34
Why do you ask?
 
  • #35
E4475FC8-BDD4-4A6A-A7B9-B4BBAED89CB1.jpeg
 
  • #36
Um, could you please use your words?
 
  • #37
Per our previous conversation, I am investigating these strange sewer like fumes to which I react. Is there a possibility that I am reacting to a combination of H2S and CH4?
 
  • #38
moriah said:
I am investigating these strange sewer like fumes to which I react. Is there a possibility that I am reacting to a combination of H2S and CH4?
I would discount carbon disulfide, CS2, as the smell you report. Carbon disulfide does not smell bad. There are many other more common sulfur based contaminants that stench, and so will mask the sweeter smell of CS2.

CS2 will not be produced by reactions in sewer gas. The synthesis of CS2 require an industrial process at much higher temperatures.

CS2 is a neurotoxin. In high concentrations it is known to cause psychosis in industrial workers. I am confident that CS2 is not at sufficient levels to cause you to imagine the problem.

The odor you are sensing is probably a thiol or thiol derivative. We are very sensitive to the smell of those compounds.
https://en.wikipedia.org/wiki/Thiol#Odor
 

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