They have much more sensitive noses than humans and because of this, they will react more strongly to certain smells, like smoke for example. All dogs have the same ability to sniff things out and they use their noses more than almost any other sense that they have.

Are dogs sensitive to smoke?

However, secondhand smoke is not just dangerous for people…it is also dangerous for pets. Living in a house with a smoker puts dogs, cats, and especially birds at greater risk of many health problems. Dogs exposed to secondhand smoke have more eye infections, allergies, and respiratory issues, including lung cancer.

Does smoke make dogs nervous?

Increased barking

When their fear, (due to the smoke), has been triggered, dogs are more likely to be on the alert for other dangers. It’s natural for them to bark more when their fear is elevated.