Smoke can be flammable, though it is not always. Smoke is produced by incomplete combustion of the fuel in a fire. This leaves unburnt fuel in the smoke (especially in dark, black smoke) that can ignite when the ideal combination on fuel, heat and oxygen is reached.

Can you light a fire with smoke?

If you apply a heat source quickly enough, you can ignite the wax and use that reaction to relight the wick of the candle. Although it looks like you’re lighting the candle with smoke, it’s really just the wax vapor that ignites. Soot and other debris from the flame aren’t ignited. … Light a Candle With Smoke.

Can you burn smoke?

Smoke contains minute particles of solid called ash that are airborne along with liquid particles and gases. Liquid particles in smoke won’t let you achieve the ignition temperature. The fire with which you may try to burn smoke may ignite the gases in it but technically the smoke in its true form won’t burn.