From Team Fortress Wiki
...I'll be waiting on ya with a whiff of the ol' brimstone. I'm a grim bloody fable... with an unhappy bloody end!
— The Demoman
A Whiff of the Old Brimstone is a community-created Miscellaneous item for the Demoman. They appear as four old-fashioned grenades on his chest, replacing the Demoman's six modern grenade projectiles.
A Whiff of the Old Brimstone was originally known as the "The Bloody Bombs" when it was originally contributed, but the name was changed by Valve before implementation into the game.
It was later contributed to the Steam Workshop on Valve's request.
The backpack icon was contributed by Smashman....
In Pyroland, the bombs appear as baby bottles.
October 13, 2011 Patch (Manniversary Update & Sale)
- A Whiff of the Old Brimstone was added to the game.
October 17, 2011 Patch
- [Undocumented] A Whiff of the Old Brimstone was made craftable.
February 9, 2012 Patch
- [Undocumented] A Whiff of the Old Brimstone's equip region was changed to Grenades from Bombs (Demoman).