Fire Storm

'Fire Storm is a Combat Tonic in BioShock 2 which causes the player to emit a burst of fire when struck by melee attacks, igniting any nearby enemy.

Game Caption
''Ryan Industries presents a warm welcome for your enemies, with Fire Storm! Set your foes on fire when they strike.''

Trivia
This Gene tonic is very similar in its effects to Static Discharge, a Combat Tonic in BioShock 2, only that it produces fire instead of electricity.