Help with Coding Pyrophobia and sanity loss when overheating

[MothsPastry]

Hii I'm requesting some assistance on coding a debuff. 

Basically I just want a sanity drain to happen when lighting objects on fire and being around burning objects (things like fire pits, torches, ect are excluded because at that point the character would not be very fun to play as and my reasoning for these being excluded are because they're controlled fires technically) and sanity loss at overheating. I know it's a perfab thing, but this is my first attempt at coding a debuff and I'm probably biting off way more I can chew but I would appreciate any assistance on this thank you!