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A polished black stage floor with a faint sheen

Fog smell and residue

What one maker says about residue, and what to check.

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Residue

One maker's warning sheet says fog and haze machines may leave a slippery residue on floors and surfaces in certain environments. HSE lists slips from spilt oil as a hazard.

Smell

We do not explain smells or say what they mean. If fog smells unusual, stop, let the machine cool, and check the manual and the fluid label.

After use

Wipe floors and surfaces as the manual suggests.

Sources: Chauvet DJ, Fog and Haze Warning Sheet; HSE, Smoke and vapour effects used in entertainment (ETIS3); NIOSH, Health Hazard Evaluation Report HETA 90-0355-2449. Brand names belong to their owners. We are not affiliated with or endorsed by them.

FAQ

We do not make health claims. A NIOSH study of Broadway shows found that some fog ingredients could irritate or dry the eyes, nose, and throat in some people, and advised keeping people out of the direct plume, using as little fog as needed, and using only fluids the machine's maker approves. If fog smells unusual, stop and ask the maker. Anyone with asthma or another breathing condition should ask a doctor.
Residue can settle. One maker warns about it.

General information only. Follow your machine's manual and the label on any fluid. Fog and haze can set off smoke alarms and make it hard to see. Never disable an alarm. Check the venue's or building's rules before you use any effect. Dry ice can cause frostbite and gives off carbon dioxide, which can build up in low or enclosed spaces. Never touch it with bare hands, never seal it in a container, use it only with good ventilation, and keep it away from children and pets. Anyone with asthma or another breathing condition should ask a doctor before being around fog, haze, or dry ice effects.

Next: fog fluid explained

Use the fluid the maker names.