I don't think its got anything to do with you're age, huffing glue/paint/gas has been thing for decades. Maybe just a little out of touch.

Spray inside a paper bag and breath into it. Never seen It's always sunny in Philadelphia? That's how Charlie composed his musical Day Man...

I think it is very old thing, like 80s or before old. Various paint thinners can give drug like effects when inhaled. And then some products might contain nitrous oxide as pressurising gas.

Is this some kind of "asking for a friend" question? /s :-)