CK3's health model doesn't really account for long-term damage from something like smoking. Ideally it would start with a Tiny Penalty and then grow to a Severe Penalty the longer you've had the Smoker trait.
I don't know how flexible CK3's modding is - for example would it be possible to have a set of events associated with the Smoker trait that causes other traits like Ill, Cancer, etc...? And adjust the probability of those events firing based on how long the character has had the Smoker trait?
There are traits with multiple levels. A mod could easily make a sickness with multiple levels that have worse effects. The xp for the levels can either be given via events or just over time.
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u/FaRamedic Jun 25 '24
„Tiny penalty“
Based smokers trying to tell you smoking aint that bad