Can smoke be placed on a POI?
Placing Smoke on a POI

Yes, you put the smoke on the same space as the POI, and the POI is unaffected.  If the smoke later turns into fire, the POI will then be removed.

Placing a POI on Smoke

In the family version (page 6 of the rules), yes.  They even eliminate the smoke for you!


  If the Target space has a Fire or Smoke marker, remove that Fire/Smoke
  marker before placing the POI marker.


However in the experienced game (page 10 of the rules), you adjust their position instead.


  In the Experienced game a POI may only be placed in a space without a
  Threat marker (Fire or Smoke), Firefighter or another POI. If the POI
  Replenishment Target space is invalid, then use this diagram to
  redirect the POI. Begin in the Target space and follow the path
  created by the arrows as shown until you reach a valid space. The
  arrows are also placed on the board for easy reference during the
  game. If there are no valid spaces on the path, reroll.