Yes, a Stinky Scylla!

"Ooh~ Your feet smell so rancid and vinegary! Would you mind letting me smell them?" Came a voice. You look around and see the upper body of a woman poking out of the water.

"Uhh, sure?" You say, putting a foot out for the woman. She emerges from the water, revealing the fact that from the waist down she's just purple tentacles. The Scylla puts her face up to your foot and sniffs it. "Ooh, almost as good as any Monster Girl's! Now, why don't I let you sniff my nasty tentacles as thanks? With feet like these you must love the scent of vinegar and sweat!"