In some cases, this type of simulated smoke is created by finely dispersing hot water or steam. The effect is similar to what happens when water is poured on a hot rock in a sauna. In other cases, water vapor machines act by condensing water vapor out of the air, such as may be seen when a freezer door is opened. Many commercial smoke machines use water vapor in some fashion.
Important Points
- This type of 'smoke' is best generated in a cool room.
- Water vapor is non-toxic.
- Hot vapor will float, so chillers may be employed when a ground effect is desired.
- A fogger essentially makes a cloud, so water condensation on objects is possible and may present a safety concern.
- Water vapor, like all simulated smokes, will set off a smoke alarm.
