There are multiple articles stating that Obsession perfume by Calvin Klein is a strong attractant for big cats (jaguars, leopards, tigers, et al) in Costa Rica, Guatemala, India and the Brooklyn Zoo.
https://www.google.com/gasearch?q=costa+rica+animals+deterred+by+obsession+calvin+klein
Big cats aren't herbivores...
The perfume thing is a reference to big cats, a la the link.
The link is a Google search who's first summarized result is someone pointing out the same thing.
The big cats are attracted to the perfume not stopped by it. Maybe the meme could mean the cologne could be stopping the carnivores from entering the field and sending them somewhere else?
This is a bad meme.
You noticed two weird things, maybe it's because they cancel out? Herbivores want to go to the beautiful Costa Rican field but they're full of big cats.
So the field is wearing cologne? (I had the same thought but the meme does NOT make that clear. Actually the meme itself doesn't mention big cats at all.)