Smoke Cloak
Smokecloak from Martin Security, tågesikring
http://www.smokecloak.com/

Smoke Control Services Limited
Smoke Control Services specialise in smoke control systems for multi-occupancy residential buildings providing packaged solutions designed to comply with building regulations simply and efficiently.
http://www.smokecontrol.co.uk

Smoke Rite Ovens
Complete range of Australian made smoking ovens that can smoke, roast, cook, bake and steam.
http://www.smokeriteovens.com.au

Smoke in C4D
Offers examples and tutorial information on how to use visible lights to make wispy, smoky smoke in C4D.
http://www.technoscope.com/c4d/smoke.html

Convection in a box.
Experiments with smoke inside a plexiglass box challenge convectional wisdom. Smoke can unexpectedly act heavier than air and then spontaneously reverse.
http://www.synapse9.com/airbox.htm

Concept Smoke Systems
Portable fog machines for security systems, testing applications and pyrotechnic effects. Non toxic water and oil based smoke machines from Concept Smoke
http://www.concept-smoke.co.uk/

Icam Ltd.
Integrated smoke and gas detection systems, laser smoke alarms, FireTracer, GasTracer, and early warning systems.
http://www.icam.ltd.uk/

Smoke Hoods and Aviation Safety
A brief article outlining the issue of the use of smoke hoods on airplanes for passengers.
http://www.landings.com/_landings/Press-Center/r11257452-1.html

Air Pel Technic
Centrifuge Oil Mist Collectors, Tube Oil Mist Collectors, Steam Mist Collectors, Electrostatic Smoke Filters, Dust Collectors, Oil Skimmers, Diesel Engine Exhaust Smoke Filters, Wastewater Evaporators, Coolant Filtration Systems, india
http://www.airpeloilsmokefilters.com

Smoke Rings and the Plasma
Beginning with an interesting comparison of the physiology of a smoke ring and ball lightning, leading to the development of a device to create ball lightning, this site continues with several well-presented accounts of the phenomenon.
http://www.goodfelloweb.com/nature/plasma/