There are only two things I can suggest if you are
THAT nervous about the effects of a static electricity device...
1) Speak with a doctor or scientist who knows everything about the subject to address your concerns to your satisfaction.
2) Do not buy or use any device such as "Electric Touch" or "Shocking".
As I have said before...I have heard no "horror stories" regarding either the users or spectators in connection to the use of "ET" or "Shocking". My (personal) understanding of these devices and of static electricity is that if used as outlined in the instructions and with good sense they are a safe thing to work with.
These are just my opinions of course.