He belonged to a group of artists who 'reacted against' convention by doing things in a completely new way.
Ozone is formed in the atmosphere when sunlight and hydrocarbons 'react together'.
The firefighters 'reacted' quickly when they heard the alarm.
(..) - Oh, my God! I'm gonna be so fired. - No, no, no. It's okay. Because once the spell ends, no one will remember what they've heard. You guys, I just wanted to see how Andy would react. What a way to come out of the broom closet. Are you nuts? We just need to lock the doors, call in sick (..)1998 TvShow: Charmed Title: The Truth Is Out There... and It Hurts Season: 1 Episode 8