Product: The Sims 4
Platform: PC
Which language are you playing the game in? English
How often does the bug occur? Often (50% - 99%)
What is your current game version number? 1.107.112.1030
What expansions, game packs, and stuff packs do you have installed? All except Basement Treasures, Grunge Revival, Modern Luxe, Castle Estate, Goth Galore, Party Essentials and Urban Homage Kits.
Steps: How can we find the bug ourselves? Place a new pressure cooker in the kitchen. Each time I've tested this I've used the pressure cooker so I'm unsure if the same thing happens on an unused one.
What happens when the bug occurs? The pressure cooker emits green gas after around 12 sim hours and any sim in the area acts as if they're smelling something awful. Note they do not get the dirty surroundings moodlet. The pressure cooker is still usable, and shift-clicking + resetting object or buying a new pressure cooker only temporarily resolves the issue. Shift-clicking and making the object dirty gives the option to clean it and this seems to resolve the issue for longer.
What do you expect to see? Since the dirty surroundings moodlet seems to have been fixed, I expect the pressure cooker to not get dirty and be uncleanable (I'm assuming this is what's happening here - it's giving off the same appearance as dirty plates or moulding rubbish except I can't clean it).
Have you installed any customization with the game, e.g. Custom Content or Mods? Not now, I've removed them.
Did this issue appear after a specific patch or change you made to your system? Yes
Please describe the patch or change you made. For Rent + Horse Ranch expansion packs were installed and game was updated to latest patch.

I'm just curious as to why the pressure cooker is doing this, since the dirty surroundings moodlet has been fixed in the latest patch. I should be able to clean the pressure cooker if it's emitting green gas but there isn't even an option to clean it. The kettle does not have the same problem.

Edit By Crinrict: Adjusted Title