Become a futanari and make it contagious

You use her powers to make yourself into a true futanari. But you give futanaris and their cum some interesting properties.

On top of being naturally attractive, futanaris produce pheromones attractive to all non-futas. As a true futanari you find yourself the subject of hundreds of advances a day.

Futa cum now has a property that once enough is taken into the body, and can cause the metamorphosis of someone into a partial futanari themself. Your true futanari cum is much more potent and can change someone after 1-2 encounters.

Futanari cum also has an addictive taste.