I think the joke is that a dominatrix is meant to, well, dominate their client (sexually). Think like with whips and chains, for example. Unfortunately, everything in her house, even the ficus, dominates her. It’s a bad first impression and she appears to be unfit for the role.
If you travel, you’ll find very interesting combinations of flavors. As a few modest examples, I recently came upon paprika flavored and cheese and onion flavored Pringles, and awhile back i had sake flavored kit kats.
Travel more! Plenty of flavor experimentation going on