Hi
How do i create a smoke bomb??
My problem is that i have to get out of a very small things a lot of smoke.

Try playing around with the divergence field, that should allow you to create quickly expanding smoke.

Cheers,
Koen

How can i to modify this field?
And what is better for my goal , the pyro solver or smoke solver??

you can just use a second fluid source, and source into the divergence field instead of the density. Scale up the values to get more effect.

Another way to set this up is with the expand from object tool on the “populate containers” tab.

The smoke and pyro solver should be pretty similar, but shaping your sim once you have the basics running will be simpler when using a pyro sim.