Fog and smoke is great for creating an eerie effect and setting the perfect mood for movies or parties. While the purpose of a smoke generator is, obviously, to produce smoke, this can have some adverse consequences, particularly when it comes to smoke detectors. Having too much smoke in an area for too long can create a problem if you are trying to film subsequent scenes in the same location as well.
While this may seem like a unsolvable quandary, there is hope. The obvious solution to this problem is to use Fast Fog or smoke, which will quickly dissipate. This will ensure that there are no problems with detection equipment and that you can get on with your business when you are done with the fog.