Yes... It is rather curious. They appear to be luring people in, almost like an allusion to the famous German fairy tale. That strong compulsion to touch the spindle and fulfill the witch's curse – which then seems then to inevitably lead to an injury such as yours.

[Wesley looks down at the hand and pauses when he spots the scar. It's by far not the most unpleasant injury he has come across in his career but it definitely makes him self-conscious; should he mention it? Ask about it? Would that be rude? Maybe they should focus on the task at hand first? ... In the end he hands over the handkerchief out of discomfiture and indecisiveness.]

Next, the injured party seems to be compelled to follow the very first person they interact with. Me, in this case, so we can assume that you shall attempt to, ah, well. Stalk me in the foreseeable future.

[There is a most awkward pause before he hurries on, trying to find the silver lining.]

But! It appears that ultimately, this is the only side-effect. People remained lucid and very much themselves, they were neither altered nor aggressive. It's a rather unfortunate and inconvenient event but ultimately harmless, all things considered.