Is... Ianto just going to smoke the whole thing? He's definitely going for it. John watches him with a bemused look, feeling as if he's waiting for something to happen.

"Feel like sharing your experience with the class?" he prompts. He's not instantly choking and falling over, which is a good sign. He's also more comfortable with this than John would have expected, but maybe this all comes under lock-picking territory.

Can he blow smoke rings, John wonders idly. Maybe he can teach him how if not.