You know your snake better than we can, from afar & on a forum- so if you think her issue is scent-related, it probably is. When you think about how many
differences there are among other creatures, even humans, as far as our sensory abilities, it makes total sense to me that perhaps she is weaker in that area,
especially as she has aged. We weren't all dealt the same "hand" in life...there are individual differences throughout the years, & since snakes use their sense of
smell more than other senses, it only makes sense that a deficiency is noticeable & affects her appetite. But I know of no rodents that are super-smelly to help.