[Temporarily disable Ei141 smoke alarm?]

Many thanks for the advice - much appreciated!

[Temporarily disable Ei141 smoke alarm?]

Hi - were are planning a kids disco at our house with lights and a smoke machine.  We have fairly new Ei141 ionisation smoke alarms throughout the house, and have been told that the smoke machine will definitely set off the alarms.  If I remove each individual alarm unit and remove the 9v battery from all the units throughout the house for a couple of hours during the party, will that work?  I tried to see if all the alarms were on a single spur that could be switched off at the fuse box, but they don't seem to be - and even if they were, I'm guessing the 9v backup batteries would mean the alarms would trigger anyway.   Any advice?