You could fall in a river and not remember how to swim. You might think there's plenty of time to cross the road, but there's not. If you're going to use these substances then make sure that somebody else is with you. Most people start sniffing solvents or aerosols 'just to see what it's like'. Nobody ever expects to come to harm, or to have a problem.
Some people get into sniffing regularly because they like the buzz better than being straight.
They don't think of it as 'a problem', it's just something they do. Solvents and aerosols are just like other drugs. They change how you feel, but they don't take problems away. Solvents are controlled by the Intoxicating Substances Supply Act 1985 in England and Wales. This Act makes it an offence for someone to supply or offer to supply to someone under the age of 18 substances that the person knows or has reason to believe will be used to achieve intoxication.