So don't lick it. And unless your DNA is in a database somewhere (are you a sex offender?), it wouldn't matter anyway.

Or have you been arrested? Or have you undergone a security clearance investigation in the united states?

I don't think you have to give DNA for a security clearance

Actually, that's not true. There's a new technique called familial searching that can locate relatives that have had their DNA taken. The cops can then ask a brother, sister, parent, or cousin if they have a particular kind of male or female relative.

Most military/contractor DNA is now in a "personnel recovery" database with the government, too.

I get very uneasy when i see people actually licking the dry glue from envelops. maybe it's just a different culture. but for me it's weird as hell.

It is actually made non-toxic with the notion of people licking it in mind. It's not like it is just regular glue or a toxic adhesive. But I get what you mean. I don't lick them either. I don't get why people are even bothering with the point about DNA on the envelope though. Anyone who has ever mailed out lots of handwritten letters has used a moisture pen. You can go buy them for a few dollars at any office supply store. I use one to seal close to a hundred envelopes for the stamps every Monday at work.

asbestos were first advertised as non-toxic :)

but even despite the health issues, having one spreading body fluids around is not very acceptable where i came from.