Oranges, lemons, and limes are often unpleasant to dogs due to their strong, tangy aroma.
Found in many cleaning products, the strong odor of ammonia is unpleasant and irritating to dogs.
The spicy smell of chili pepper can be a deterrent for dogs due to its intensity.
The pungent odor of garlic can be off-putting to dogs and may also be harmful if ingested.
Similar to garlic, the strong smell of onions can repel dogs and is toxic if consumed.
The harsh chemical smell of rubbing alcohol can be unpleasant and irritating to dogs.
Peppermint and spearmint have strong odors that dogs often find disagreeable.
While not as strong as some other odors, cinnamon can still be unappealing to many dogs.