Sims dropping to the ground for no apparent reason.

Hmm, maybe. It's a public place so that definitely could be a possibility. I just didn't see anything as I was focused on what was going on inside. What is hilarious about it is my sim stepping outside and just stopping and it looks like he is wondering what the heck the same as I was. I did not make him go outside and was kind of worried he might catch a disease or whatever caused it and that it might happen to him. So I grabbed the pic and made him go back inside and then traveled him and his wife out of there lol. 

Thanks for the tip though. I don't know much about the werewolves so that never would have occurred to me. I knew someone had to have an idea and yours makes good sense to me. I think I will credit this as the solution even though it really wasn't a problem and i was just stumped :)