Funny you should ask, Jack. That particular shoot, Bruce was using the studio fog machine, which was old, cranky and very unreliable. Sometimes not producing any fog. Sometimes producing a lot. But never producing with any sort of reliability.
Eventually, because he likes the possibilities and the effects, Bruce got his own fog machine. This got used a lot at studio shoots pre-covid. It has gotten used a few times here at home post covid when we’ve done mini shoots in our largest room.
Bruce has gotten quite handy with using this machine and loves to throw it in from time to time.