Bigger problems include delusional thoughts and hallucinations. And there are bigger problems, still. Suffocation , for example. That happens when glue sniffers pass out with their faces buried in glue-filled plastic bags. If no one notices, they never come back up for air.
Aerosols pose a similar risk.
For an unlucky sniffer, it's like drowning on dry land. Then there's long-term damage. And if your body doesn't die enough so that you notice it today, there's always tomorrow. Your odds of serious problems will be better then, thanks to a process called tolerance . That means that sniffers have to keep using larger and larger amounts of a chemical to achieve the same effects.