Its very distinct, chemically like another poster said. Its very specific though, most people won't know what that smell means.

Smells a bit like dry ice croseed with acetone. Very chemically smell and yes you will smell it from meters away like a vape pen.

Meth users them selves to me have a smell once they enter the later stages.

It's this weird rotting smell. It's different then like not just having showered for months in end or being a tabacoo smoker.

It's like this deep cat piss decay smell.

Smells like burnt rubber bands to me.