Dryly, she said, “I think you’re supposed to wear a mask for the latter, and ear plugs for the former. What even are you doing that people are firing guns by your /head/?”
“How was I suppose to know that when introduced to inorganic matter, Argon reacts like a bonfire display during Guy Fawkes Night? I’m not a chemist!” He crossed his arms, a little indignant, but still managing a small smile. “… Work? It’s not like I control when it happens. Sometimes it just happens! Bang bang! Ow ow. Ears bleeding.”
Summer started to laugh in earnest; Fitz sounded like Tony trying to explain an explosion in the workshop. “I’m still trying to figure out how it just happens in a lab! What kind of work are you doing in there!?” she managed.