The stack on a cooker? I'd stop all air flow to put it out.
A charcoal chimney? proceed!
The chimney in your house? Call the fire department!
It depends on what you mean.
Proceed!
Once they get hot in a chimney I don't think they will slow down until there's nothing left to burn and that will go quickly.
Don't be nervous - that's what they're supposed to do. Some folks who like a really hot grill for searing will set a grate on top of the charcoal chimney to achieve that.
Add some more paper and gas. And have a April Fools show!Its burning real hot with fire now, what do I do???? Let it burn?
When my mom decides to take a look shes gonna be on fire