According to data from the INEM's Poison Control Center (CIAV), 18 cases of carbon monoxide poisoning were recorded in 2024, including two children.

In 2025, up to November 24, 28 cases have already been recorded, involving 22 adults and six children, says the CIAV, highlighting that most of these situations were related to the use of fires, heaters, or stoves in poorly ventilated areas.

With the drop in temperatures and the increased use of domestic heating equipment, the Poison Control Center (CIAV) reminds, in a note sent to the Lusa news agency, “of the need for safe use of appliances that can produce carbon monoxide, such as fireplaces, water heaters or gas heaters”.

“Carbon monoxide is an invisible and odourless gas that can cause poisoning with nonspecific symptoms such as headaches, nausea, malaise or drowsiness. Prevention remains the best way to avoid potentially serious situations”.

The Poison Control Center reinforces the need to adopt preventive measures, such as checking the condition and maintenance of equipment before use and avoiding using them in completely enclosed spaces.

It also recommends adequate ventilation in rooms where the equipment is operating and, in the event of symptoms such as headaches, nausea or fainting, opening doors and windows, removing people from the house and contacting 112 or the CIAV (800 250 250).