A completely ordinary cigarette is immersed in liquid oxygen (temperature -183°C) and then lit. It burns ablaze within three seconds. The filter practically explodes.
How does it work?
Objects normally burn using oxygen from the air. Because air is only around 21% oxygen and 78% nitrogen, most burning in the air can be controlled very well. This large proportion of nitrogen prevents burning too quickly.
In pure oxygen, the reaction rate increases enormously. We further increased the amount of available oxygen by liquefying it, practically reaching the point where the cigarette explodes rather than burns.