I am working on a project where a pumpkin is on fire and then the fire dies down and becomes smoke. Now the smoke took the place of the flame and I want the smoke to stop and that only the pumpkin will be left but that it's still out of smoke.

As a heads up, I'm using houdini for the very first time and doing this in an Elective for university.


Please help ):

It's a big topic, but I'll assume you're using SOP based pyro.

Locate the pyrosolver node, click on the Fields tab, and roll open Density.
You should see a Dissipation field. You can animate this. Try a higher value to encourage smoke to go away more quickly.

On the Sourcing tab, you can also limit the source (the input generating flame/smoke) to exist over a frame range.