We recently got a Chavet Hurricane 1301, so that weekend, I plugged it up to give it a test and let the kids play in the smoke. About 20 minutes later, we had two fire trucks pull up, sirens blaring. I profusely apologized and said it was just a fog machine, which I immediately turned off. They were fairly impressed, and came up to check it out, commenting that it is like their old model at the station. I didn't get any citations or official warnings, and they were super cool about it, but one gentleman did say I should call dispatch to let them know next time.
We do live pretty close to Main Street and a few busy state Highways, and near the rec center and such, so very visible. One of those "little boxes made of ticky-tacky" neighborhoods, full of concerned neighbors with other kiddos, so I'm not terribly surprised in hindsight. Should make for a great flow of trick or treaters too!
Anyway, I picked up material for a fog chiller this evening, which should keep the fog from billowing high like last time, and I'll make sure to call the FD ahead of time for heads up (or defense of I get a citation), but it will be tested again very soon!
Cheers!