I haven't heard about this. I know it is being said to do everything for humans. I doubt if it does fleas for dogs because if comes out of their pores. You are correct dogs pant to cool themselves instead of sweat. It is said the garlic helps with fleas. But garlic, onions, etc is poisonous to dogs. A little garlic is unlikely to kill a dog. It generally takes a lot to make them sick. Eve more to cause more harm. I'm still skeptical of the benefits that it will have on humans. I haven't read enough of the research to form an opinion.