Sonic: The Breeze Blight

On the planet Mobius, Eggman was working on a chemical that once sent into the atmosphere would make all Mobians infertile. But while working on it, it somehow slipped out unnoticed and got into the air shortly.

But, instead of it's intended purpose, The chemical that would soon be known as "The Breeze Blight" or "The Breeze" for short had the opposite effect. Any Mobian who were affected would get more fertile and wanting to mate with anyone attractive. Even more for anyone they actually had affection to. It was also highly contagious, with any contact with someone already infected. It would eventually wear out, but there was no telling how long that would be.

The results would be, at best, several couples having sex way more than they should. At worse, some Mobians having several partners, and in the most extreme cases, some poor souls being raped several times over.

These are the shenanigans that would ensue with the release of the breeze.