Just one line at a time of stage direction sometimes can help the reader see it a little bit more. In the final version of the episode, we do see numbers written on the cigarette as well as a mysterious symbol
Proceed to squirt the sponge with more distilled water, then leave it in a plastic Ziplock bag sealed inside the humidor
Details of exactly how the tests will be performed havent been released but Carter says the drugs can be administered orally
April 17 - Edinburgh, Caves 18 - Manchester, Gorilla 19 - Birmingham, Hare & Hounds 20 - London, Koko November 20 - London, Roundhouse Cigarettes After Sex is released via Partisan Records on 9 June and is available to pre-order now
For a simple three-step process, there are a lot of things that could go wrong
Lead in Tobacco Plant Polonium-210 and lead-210 get into and onto tobacco leaves and remain there even after the tobacco has been processed (Centers for Disease Control, 2015)