We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember PeterC
saying something like:

Graphite powder is good, but puffing into the lock tends to over-egg the
pudding somewhat and then that gets everywhere (your hands, your face,
up your nose, etc).

That could possibly be carried with some sort of liquid, same as PTFE.

Graphite-inna-vaporating-carrier aerosols have been around for years.