Does anyone know how to add a FX (specail effect) to a sim or person? I know how to add an effect to an object, but I'm lost when it comes to this.

Thank you Brian

I never did it, but it should be doable, since the game does apply some effects to sims.
In general, I suppose it's just a matter of finding the right slot to attach the effect to.

I suggest to examine the smart-milk machine: when the toddlers drink it they glow red, which should be a sim-effect like the one you are interested in.

I did it once by accident. Using the Start/Stop effect primitive (same as with objects), run a "soft start effect" on the target "My Object ID" at "default 3/4 height". You don't need to create any custom slots or anything, sims come pre-slotted. The rest is much the same.

If you want to subsequently stop the effect of course, you have to run the stop effect command at that time.