to fill party balloons?
One static spark sets it off.
Saw a pic of a compact car where they'd filled the interior with balloons to transport them to a party.
BOOM! Blew the roof outward.
Here's another incident:
https://www.bakersfield.com/news/four-injured-in-acetylene-bomb-explosion-during-bakersfield-party/article_2ef8a2dd-b98a-5455-9297-61f08578352f.html