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If someone needs immediate help with sewer gas exposure, use emergency mode.
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DEVELOPMENT FIXTURE — Strong rotten egg or sewage smell from drain, manhole, or septic area causing symptoms.
The essentials if you need to act right now.
Fresh air if sick. Never enter sewer space. Call 112 if collapsed.
What might I see? Observable signs — no diagnosis required.
DEVELOPMENT FIXTURE — Rotten egg smell from floor drain, manhole, or septic tank.
DEVELOPMENT FIXTURE — Dizziness at basement level near plumbing.
DEVELOPMENT FIXTURE — Person unconscious near open sewer access.
Optional deeper explanation — not required to act.
DEVELOPMENT FIXTURE — Sewer gas contains hydrogen sulfide which can knock out sense of smell and cause instant collapse.
DEVELOPMENT FIXTURE — Low oxygen in septic tanks and manholes kills rescuers who enter.
Check the scene before you approach.
Civilian-safe actions you can take.
DEVELOPMENT FIXTURE — Move away from opening or enclosed basement with strong smell.
DEVELOPMENT FIXTURE — If someone fell near manhole — do NOT climb down.
DEVELOPMENT FIXTURE — Call 112 immediately if person down.
DEVELOPMENT FIXTURE — Ventilate from safe distance — fans from doorway only if not entering.
When and how to get professional help.
DEVELOPMENT FIXTURE — Never enter confined sewer spaces. Rescue requires trained teams with breathing equipment.
DEVELOPMENT FIXTURE — Call 112 if person collapsed — confined space rescue needed.
DEVELOPMENT FIXTURE — Municipal sewer emergency for ongoing odor or blocked main.
DEVELOPMENT FIXTURE — Report exact manhole or drain location.
Dangerous actions, when not to attempt rescue, and common myths.
DEVELOPMENT FIXTURE — Do NOT enter manhole or septic tank to rescue — multiple fatalities common.
DEVELOPMENT FIXTURE — Do NOT use open flame near sewer openings.
DEVELOPMENT FIXTURE — Do NOT ignore smell because "sewers always smell" — sudden strong odor is different.
DEVELOPMENT FIXTURE — Quickly jump into a manhole to pull someone out
DEVELOPMENT FIXTURE — Sewer gases cause rescuer collapse within seconds. Call 112 for confined space rescue team.
Other scenarios in the same family.
Mixed chemicals
DEVELOPMENT FIXTURE — Bleach and acid, bleach and ammonia, or other cleaners were mixed and fumes are rising.
CO alarm
DEVELOPMENT FIXTURE — Your carbon monoxide detector is beeping or alarming.
CO poisoning
DEVELOPMENT FIXTURE — People show signs of carbon monoxide poisoning from heater, generator, or enclosed fire.
Child electrical shock
DEVELOPMENT FIXTURE — A child has touched an electrical socket, bitten a cord, or pulled a live plug.
DEVELOPMENT FIXTURE — Warn others to stay away from open access points.
DEVELOPMENT FIXTURE — Call municipal sewer or water department for investigation.
DEVELOPMENT FIXTURE — Monitor yourself for headache — seek medical care if symptomatic.
DEVELOPMENT FIXTURE — Hydrogen sulfide exposure needs hospital care.
DEVELOPMENT FIXTURE — Confined space rescue by fire service only.
DEVELOPMENT FIXTURE — Multiple deaths in chain rescue attempts.