Felicity covered her mouth with a hand when Vivian pouted and put her marshmallows away, stifling the laugh that she would possibly be reprimanded for. She offered her friend a consoling smile, before turning to the question at hand.

Smoke. But... These fires were smoke-less. And... Oh, she guessed that really, it didn't matter: if they were to be using smoke in this lesson, the Professor would surely make it happen at the right time. Although, as of yet, Felicity wasn't sure how smoke could be used. People had mentioned signalling, and Divination, but this was Transfiguration, and she was already lost.

She didn't very well want to put her hand up and say that smoke was the main cause of fire-related deaths, but that was her only knowledge on the matter. So Felicity stayed quiet, listening to the other answers.