From Brotato Wiki
Each additional Scared Sausage increases the chance to inflict burn by another 25%. It is possible to reach a 100% chance by holding 4 Scared Sausages (which is the count limit for this item).
Scared Sausage passively adds 1 to the burn damage of any weapons that inflict burn (e.g Flamethrower), and to other Scared Sausages (if multiple are held). Since Scared Sausage costs more than 1 Elemental Damage, it is not economical to buy the item only to increase the burn damage of weapons.
Effects that can inflict burn
- Spawned projectiles from Alien Eyes, Baby with a Beard, Lightning Shiv, Cacti Club and other weapons can inflict burn. (This was not the case, but was changed in patch 188.8.131.52.)
- The Explosion from Bull or Landmines can inflict burn, as do explosions from weapons such as Rocket Launcher.
- All Engineering structures can inflict burn, via direct hit as well as explosion hit ( Turret, Laser Turret, Explosive Turret, and Tyler).
Effects that can not inflict burn
- Baby Elephant, Cyberball, or Riposte can not inflict burn.
- The Explosion from items such as Spicy Sauce or Rip and Tear can not inflict burn.
Incendiary Turret inflicts a separate type of burn ("blue burn"); they can not inflict the burn from Scared Sausage.
The damage of the turret's "blue burn" is increased by 1 for each Scared Sausage.
Snakes do spread the blue fire of the turret.