Dog Reacts To Bad Smell. The foul odor alone is enough for a dog to leave the bug alone. Artificial scents can cause nervous system disorders, breathing difficulty, kidney.

The skin is the most likely source and will be due to the sebaceous (oil) gland secretions. He never used to smell bad (other than an average 'doggie' scent, of course!). The strong smell from bleach reacts with your dog’s olfactory receptors, damaging.