With small amount of suction what powder or properties an ignite with air or carbon dioxide?

say i were to blow on the powder or give it suction ,...With small amount of suction what powder or properties an ignite with air or carbon dioxide?
finely divided iron and lead (and other metals) can do this see link.With small amount of suction what powder or properties an ignite with air or carbon dioxide?
I cant think of any material that will spontaneously ignite simply from being blown or sucked. Merely moving the material around is a ';physical'; change and burning is a ';chemical'; change. Now, in the presence of an open flame, many many powders will ignite much more easily in a disturbed airborne pattern rather than lying in a pile...a good example is sawdust... a pile of saw dust will burn, slowly, it is wood shavings after all... but if you throw a handful into the air, spreading it widely... the resulting fireball will seem like an explosion by comparison. A prime example of this is grain silo or grain elevator explosions.