ACtual cigarette paper (not good rolling papers like rizla silvers,smoking papers/ocb's etc) I mean actual cigarettes, the paper used contains bleach to make it white (chlorine generally) and also they burn very quickly and make for shit joints
What I do when making a secret agent is roll a joint of even thickness all the way down, about the diametre of a cigarette
then I just cut of the orange tip of the cigarette paper and wrap it around the roach, and hey presto, it looks like a ciggie unless on very close inspection.

I usually do these with keef/kiff since the smell is far less distinctive and not very strong when mixed with baccy.
It smells a little bit differant but people cant really pinpoint it on anythin illegal.

J