Is it a genuine fog of suspended particles
or is it an aerosol/paint gun effect.
There is a difference.

Can you tell me what the difference is, Theo? I didn't know there was
one.

The one in nature consists of
100% humidity and sudden chilling of
saturated air. In nature ideally all
the fog particles will have the same size
and charge so they do not immediately clump.

Since this is not reproducible
artificial fog machines use chemicals
such as glycols to stabilize the particles once formed.
The mixture is heat evaporated, slightly
compressed & pushed out into the open
where it quickly cools to form fog.
Stabilization is needed because the particles are so small
they will quickly evaporate even in 90% humidity.

I'm not even gonna consider oil based fog.

The aerosol effect tries to spray
particles small enough. but the particle
sizes are not even & there is no charge
so they quickly clump and gravity takes over
loosing the fog effect.

The big down side with aerosol sprays is that
the nozzles are extremely small. even the smallest
particle will clog the nozzle.

--
Theo in Zone 5
Kansas City