According to the search results, incense can be harmful to dogs due to the release of particles, harmful gases, and toxic compounds like benzene and aldehydes when burned. Dogs have sensitive respiratory systems and noses, and exposure to incense smoke could cause respiratory problems, including bronchitis and asthma. Some types of incense may contain ingredients that are harmful to dogs, such as essential oils, and dogs are more sensitive to specific essential oils in incense, such as sandalwood, which can be toxic to them. The smoke from incense sticks also contains harmful chemicals that can cause skin irritation, inflammation, and redness. Ingestion of incense can also be a risk for dogs.

It is important to note that not all types of incense are created equal. Some types of incense are made with more natural and less harmful ingredients, while others may contain chemicals and synthetic fragrances that can be more harmful to dogs. Therefore, it is best to use incense cautiously around pets and to choose high-quality incense that does not produce as much smoke as low-quality products.

In conclusion, incense can be harmful to dogs, and it is best to use it with caution around pets. If you want to use incense, make sure to choose high-quality incense, burn it in a room your pets don’t have access to, and ensure there is proper ventilation.