The answer for this question is: Atoms
I think it is feeling warm air while standing in front of the blower from a heating system.
Hope this helps! :)
Answer : The question is to write the elements alphabetically and seperating them with commas.
So in this case for your question of Fireworks , K

,
The answer will be
K, N, O.
You have to just differentiate the elements and write them according to the alphabetical order.