⛺ Tent Heating in Cold Weather
Running portable propane or diesel heaters inside a closed tent for warmth during chilly nights is the #1 cause of campsite CO poisoning.
🍲 Cooking Inside Enclosed Vestibules
Using gas stoves, charcoal, or liquid fuel burners inside tent vestibules or canopy enclosures during rain or snow prevents proper airflow and traps toxic exhaust.
❄️ Snow & Debris Blocking Ventilation
Overnight snowfall, heavy frost, or fallen leaves can seal tent mesh vents and heater exhaust pipes, creating a deadly zero-ventilation trap while you sleep.
💤 Symptoms Misdiagnosed as Altitude Sickness
Early CO symptoms like dizziness, headaches, and nausea closely mimic exhaustion or mountain sickness, causing campers to go to sleep without realizing the danger.