Final answer:
The most common cause of death with inhalant intoxication is CNS toxicity.
Step-by-step explanation:
The most common cause of death with inhalant intoxication is CNS toxicity. Inhalant abuse can have serious effects on the central nervous system, leading to seizures, coma, and even death. In the case of hydrocarbon intoxication, the gasoline that was ingested can cause damage to the brain and nervous system, resulting in CNS toxicity and potentially fatal outcomes.