My recherche was more technical and include two versions for the smoke costume.

Option 1 – Long tube
– Connect a drain tube (diameter 40 -50cm ) to a normal fog machine
– Tube holds a certain amount of time the heat when fog ejection from
– From a long tube transparent tube up under the dress (back)
– On the back of a distributor with several small tubes that go into all the regions of the costume
– From the tubes then the smoke comes out distributed

Option 2 – small fog machine
– Set includes 12-volt battery, charging adapter , Nebelfulid and Transport Case
– The battery is charged via the included charging adapter ( charge indicator )
– Suitable for all water-based fog liquid
Discharge volume : 8,5 m³ / min.
Fuel tank capacity: 0.11 l
Dimensions ( WxDxH): 227 x 66 x 81 mm
Weight: 2.7 kg
Fog Duration: 60 s
Output distance : 2.5 m
Reheating time : 120 s
Warm-up Time : 7 min

Problems
– Fog machine needs warm up time
– Strong heat development
– Large current: 230V, 700Watt ( a very small ) = 4.34 A
– Heating elements need a lot of power ( battery would be after a short time (10 – 20min) empty.
– Fog transformer required for the AC voltage supplied from battery comes only DC
– Tiny Fogger costs from € 700 upwards