Hm, if it's like that then you don't have to force yourself, you know.

[Just as a reassurance; he's teaching the other because Yamato had seemed curious about it, but he doesn't have any intent to force something like this, it's more just sharing something that relaxes him when he has some time to do so. When the smoke comes rushing at his face, he squeezes his eyes shut, fanning a little bit of the smoke away with his hand as he laughs.]

What are you doing! Come on, we're almost there.