The initial warning signs of low-level sewer gas exposure and poisoning include persistent headaches, dizziness, nausea, fatigue, eye irritation, and a sore throat. Because sewer gas contains hydrogen sulfide and methane, prolonged inhalation of these toxic vapors deprives the body of clean oxygen. If exposure levels increase significantly, individuals may experience memory loss, poor concentration, and respiratory distress. Callout type="warning" title="Hygiene Warning": Immediately evacuate the home to fresh air if you experience acute symptoms of sewer gas exposure. Verification: Call a licensed professional plumber or gas specialist to inspect your home for plumbing vapor leaks.
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