Townie Who's On Fire
You are completely immune to any fire-based kills or actions (because you're already on fire).
Anyone who targets you will become burned. These burns have no game effect, except that they will be mentioned in the day start post. Once a player is burned, they'll stay burned for the rest of the game (thus being mentioned in every day start post), and you can't be "double-burned", i.e. extra burns are redundant and have no effect.
Anyone whose role contains something that flavourwise could burn will die if they target you.
Anyone whose role contains something that flavourwise could melt (e.g. icecream-related) will have that portion of their role deleted if they target you (e.g. a "Vanilla Townie" would just become a "Townie" if they targeted you with an invention or the like).
Any role which flavourwise could extinguish fires (e.g. water-based roles, sand-based roles, Firefighters, etc.) will vanillaise you if they target you, without becoming burned in the process.