Definition
A toxic condition caused by breathing air with an elevated concentration of carbon dioxide (CO2), producing symptoms such as headache, dizziness, rapid breathing, drowsiness, confusion, and eventually unconsciousness. In aviation it most commonly arises in confined cabin spaces where CO2 accumulates from cargo such as sublimating dry ice or from inadequate ventilation.
Plain English
Breathing too much carbon dioxide builds it up in your body and starts to poison you. It makes you feel sick, foggy, and short of breath, and if it keeps going you can pass out.
Context Anchor
Seen in discussions about carrying dry ice in an aircraft, especially in small cabins or poorly vented baggage areas.
Derivation
‘Intoxication’ comes from the Latin ‘toxicum’ meaning poison. So ‘carbon dioxide intoxication’ literally means being poisoned by carbon dioxide — useful because pilots often associate ‘intoxication’ only with alcohol, when medically it just means being affected by any toxic substance.
Why Pilots Care
Unnoticed buildup of carbon dioxide from sublimating dry ice can silently degrade pilot judgment and passenger safety.
Grounding Statement
If dry ice is carried in a closed aircraft, it can slowly turn into invisible carbon dioxide gas and make the air unsafe to breathe.
Intuition Check
Intoxication does not mean alcohol or drug use here. It means the body and brain are being impaired by breathing too much carbon dioxide.
Example Sentence 1
Before loading dry ice into the cabin, the pilot reviewed ventilation procedures to reduce the risk of carbon dioxide intoxication during the flight.
Example Sentence 2
Without proper ventilation, large amounts of dry ice can cause carbon dioxide intoxication for everyone aboard.