So, after taking a long hiatus from the Sims ( too cheap to buy new gaming system) I revived myself with Sims 4. I too noticed that my Sims were constantly reacting in disgust and after searching online for remedies it lead me here. I don't use cheat codes so it had become extremely annoying to constantly have this happen. Then I had an epiphany. I noticed one day that my butler seemed to completely ignore a trash can that was clearly overflowing and emitting green fumes even when I clicked him to clean up and used my SimRay to mind control clean. Finally I sent my Sim to do the job and got the error message that I didn't have an outside trash receptacle. Bingo! Long story short I put a trash shoot on my wall and no more "react in disgust". So just make sure your sim or butler or maid has somewhere to dispose of trash like a shoot or outdoor trash can then you don't have to use a cheat code. Hope this helps!