Hi, I was getting very tired of my sims constantly putting the speed of the swing on fast and then the baby getting sick on me. I went over to NRAAS and asked over there in the Retuner section. This is what somebody said. First of all go to either the City Hall or on a personal computer, then select NRaas > Retuner > Settings > General > By Tunable XML > Sims3.Store.Objects > Baby Swing > kChanceOfQueasy > (default is 2)
I set the queasy to 0 and it works great! I just thought that I'd pass this along to others who are sick and tired of their sims setting the swing on fast and getting a sick baby.
Yes, that is very common problem which could be found in baby and you should not relax back and take a break rather than going to baby doctor and change your toys as well as baby swing at https://babyswingclub.com/best-portable-baby-swings/ to check what is best for your baby and what common in between your current one and what you bought it,.