Re: Help!!! how do you Turn off Sims Illness?
There is also a trait you can buy with aspiration points called, sickness resistance. I find this really helps; however, not completely. One time I gave my whole family this trait and the next day they were all sick. But generally it reduces the oncoming illness occurrences.
If you are interested in mods to get there quickly several people have mods to assign traits with cheat actions. I use one from cool spear (available at Simsasylum, must become free member- search for traits) it is called,
Traits - Sim Trait Application System Reworked - New Additions RoM Traits for October 2019.