Read about FOOF

Edit: found the reference: https://www.science.org/content/blog-post/things-i-won-t-work-dioxygen-difluoride

Whenever you want to know just how bad it would be to drop on your hand some chemical that comes with a concerning number of warning stickers, like hydrazine, there is usually a 1950s paper likely in conjunction with the US Airforce that that can tell you, with receipts.