That'd make me a hypocrite. [He pulls a cigarette free and hands the pack back.] I'm chock full of bad habits. [And thanks to a certain vampire, he's adopted a couple more.
Now to see what his new powers can do. He holds a finger over the end of his cigarette and concentrates, and is pleasantly surprised when it lights up red.] Huh. Like frying something under a magnifying glass. [He repeats the process for John's.]