The party I did on saturday was in a school. The caretaker asked me as I was setting up "Do you have a smoke machine, if so, you can't use it!!" I explained to him that I had a haze machine which was different and he took some convincing. He even said "If it sets the alarms off then it's down to you and Hampshire Fire and Rescue and you know how much they charge for call outs" (He was laughing as he said it). I simply replied "Trust me".
At the end of the night he said to me "I think I'll tell everyone from now on that Haze is ok"