I've got two saint bernards and one of them is a 5 month old puppy (75 lbs.). Her coat smells as if she's been into some sort of petroleum product, but I know that she doesn't have any access to anything of the sort. Can someone maybe help me to understand why that is? I don't know if it's just the way she smells or what, her momma doesn't smell that way!. Any help would be appreciated, thanks.