I'm trying to visualize room air flowing into the ventilator

I’m trying to visualize room air flowing into the ventilator

I have already done a tutorial where prim and preset fire interact using flow

At first, I tested it by placing a fire on the cloth deck chair demo.
But the fire and wind from the fan didn’t interact.

The next thing I tested was forcefieldwind demo, but likewise wind and fire didn’t interact.

I need a good way to visualize fire and wind interacting or room air flowing into a vent.