As for, "contending that listing agents are intentionally selling smokers houses cheaper, as a grand conspiracy against smoking?" - No it's not the listing agents that are a part of the conspiracy, they are just the dupes.
Like I said, what about the smokers house that doesn't smell of old stale tobacco and doesn't have a dingy tint to the walls. Now that the anti-smokers are wailing about smokers houses stinking and being filthy, (I wonder where that came from?), the listing agents won't even try to get a fair price for ANY house that has had a smoker living in it. Wouldn't be PC, would it?
I agree with you that IF a house stinks, for whatever reason, and if a house has tint to the walls, for whatever reason, it will lower the price.
If a house doesn't stink, even though a smoker has lived there, and if it doesn't have a tint to the walls, even if a smoker has lived there, it should not affect the price.
Now that the antis are putting out this BS it won't matter. If a smoker trys to sell a house, no matter WHAT the condition, the listing agent won't try to get the same price as for a nonsmokers house.
More unfair demonization of smokers. See the picture forming?