Carbon monoxide (CO): the “invisible” risk of global warming
Carbon monoxide is an invisible, odorless, and potentially fatal gas. INEM (National Institute of Medical Emergency) recently issued a warning about poisonings associated with the use of generators and combustion equipment in enclosed or poorly ventilated spaces .
1) What NOT to do (without exceptions)
INEM recommends:
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Never use braziers, grills, gas stoves, or charcoal indoors.
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Do not use generators in enclosed spaces/garages or without adequate ventilation (even with doors/windows open).
The DGS (Directorate-General of Health) also recommends not using gas stoves, ovens, or charcoal cookers to heat the house .
2) Signs/symptoms that may indicate CO poisoning
SAMU (the Brazilian emergency medical service) advises paying attention to symptoms such as: headache, dizziness, nausea, vomiting, and drowsiness .
3) What to do if you suspect (immediate action)
According to INEM:
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Go outside immediately / get some fresh air.
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Dial 112 immediately.
4) Extra safety with electric heaters (fire and shock)
Even without combustion, there are essential rules:
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Keep away from curtains/fabrics
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Do not sleep right next to a heat source.
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Turn off before going to sleep/leaving (the DGS recommends turning it off to avoid accidents)
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avoid overloaded extension cords/“triple” outlets (prefer a direct outlet)
And DECO has already reported cases of failures in electrical safety tests on some portable heaters, reinforcing the importance of choosing well and using them prudently.
FAQ
Is it safe to use a brazier indoors?
INEM recommends never using braziers/combustion in indoor environments without adequate ventilation; there is a serious risk of CO.
What are the symptoms of carbon monoxide poisoning?
Headache, dizziness, nausea, vomiting, and drowsiness are warning signs — you seek fresh air and call 112.