According to his journal, Aaron Burr was in need of a way to light a candle but didn't have a match on hand. In his haste, he grabbed the closest object - which happened to be a gun - and accidentally caught himself on fire. Thankfully, he put out the flames quickly and tried once again to light the candle.
Background Music (Drawing) from ashamaluevmusic.com The Private Journal of Aaron Burr Page 220 https://www.google.com/books/edition/The_Private_Journal_of_Aaron_Burr/qH0TAQAAMAAJ?hl=en&gbpv=1&printsec=frontcover