The best replacement for fog machine is dry ice.

The best alternatives to fog machine are rated as following:
★★★★★  dry ice
★★★★★  hazer
★★★  haze machine
★★  smoke machine
  fog machine

Your alternative for fog machine is not listed? Suggest!
Speaking about fog machine, one probably shouldn't forget about dry ice.

Other search terms related to fog machine and their ratings are:
★★★★★ dry ice
You have in mind a companion for fog machine and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of fog machine in all years. Click on graph for more.
fog machine
dry ice
hazer