There are several smells that deter cats from peeing, including:

• Citrus (lemon, orange, lime)
• Vinegar
• Peppermint
• Rosemary
• Cinnamon
• Coffee
• Cayenne pepper

These smells are unpleasant for cats and might deter them from peeing in a certain spot, but it is unlikely to resolve the problem unless the underlying reason for the behavior is addressed. Once a cat has urinated in a location, they generally return to the same place to pee if the smell lingers. Therefore, it is important to clean the area thoroughly with an enzymatic cleaner before using any of these smells as a deterrent. It is also recommended to have the cat checked by a veterinarian for any medical issues that may be causing the behavior, and to identify the underlying reason for the cats behavior so it can be addressed.