Peridot wrinkles her nose a little, unaccustomed as she is to the smell of cigarettes. She's almost tempted to ask him what the appeal is in doing that, but. On the other hand? She doesn't really care. It doesn't particularly bother her, anyway.

Unfortunately for Childermass, Peridot has already heard Lambert's side of things. So there's nothing stopping her from basically saying aloud what he's thinking, as she sinks back down to start digging through the scrap once more: "I dunno. He mostly seems to argue with you when he thinks you're putting yourself in danger. Seems like he worries about you more than he does most other people."

Just a bland observation her part. Nothing coy, nothing implied.