I can only guess that Alien perfume smells like a cross between uranus, which they are probing, and the smell of pee from when you peed yourself during their experiments. Now you can wear the scent of a defiled and scared human all day long.
It comes in a cool bottle that looks all weird and alien. I’m pretty sure this is part of their plan. This scent will get you noticed. And when they notice, they’ll suck you up in the spaceship and then the fun begins.