Fog/Smoke Machines

Fog / Smoke Machines

Updated August 23, 2017

These are the reasons that fog and haze (regardless of how this is created) are not allowed during events on campus.

  • The fog and haze can obscure the visibility of exit signs/ doors, which is prohibited by the building code. This can also obscure visibility that is needed for security*.
  • The fog and haze can set off smoke detectors that are in the HVAC system or can activate the beam detector and activate the fire alarm. The fire department would probably shut down the event. Note:  MIT does not shut down smoke detectors or any other part of the fire alarm system for events.
  • The conclusion of several studies was that exposure to fog and haze causes irritation of eyes, nose, respiratory tract, and voice. Therefore this is not appropriate to use at a public event.
  • *The MIT Metal Detector policy may apply to your event.

This applies to dry ice and liquid nitrogen can be used to create fog as well as fog/haze machines, which use chemical solutions.

Fog/haze machines, dry ice, and/or liquid nitrogen are NOT permitted in Kresge Auditorium, Little Theatre, Kresge Lobby, and other CAC event spaces.

If you plan to use a fog machine outside (not in a tent or other shelter), please contact EHS about how you will address the health issues.