Notes:

From the forgotten cartoon "Toonsylvania" episode segment "Love Potion Number Nein" in which Igor uses a love potion-laced perfume to make the Ghost Girl "Natalie Nightshade" fall in love with him.

While it does end up working, it seems the two can't be together unless he becomes a ghost too, so she spends the entire episode trying to straight up murder him so they could be together forever. (Hence why she has the chainsaw)