There is going to be turned off buyers.
Ever walked into a nice home, that is just perfect on paper for your client....only to be greeted by the stench of smoke, pet odors, or occasionally something worse?
I infact smoke myself (in process of quitting finally, insert adda-boy here), but I have always taken it outside as I dont want to expose the rest of the family any more than I have to. I also try to 'open' my listings eyes to the fact that the old olfactory sense directly influences a majority of buyers impression of the home. Pay attention, and if something stinks, most buyers are going to say something about it, or at least be obviously be turned off by it. Even new construction homes with paint fumes, and building materials that contain high amounts of formaldehyde (which has gained some national attention to causing health issues) can turn off some buyers.
There isn't a magic formula or cover-scent for a lot of things, but some simple guidelines and forethought can go a long way. If the seller has smoked in the house for 30 years......its going to take more than a coat of paint to cover that 'yellowish-film' on the walls and ceiling, and most prospective buyers may be considering painting it for one reason or another, but should they have to look at that as in todays market their is going to be a home down the street listed without that concern or additional expense. The seller needs to address that problem to maximize the client pool. Pet odors can normally be controlled during the listing period by some additional care or having the carpets cleaned, and the old 'wet-dog' smelling couch removed from the home.
They probably wont consider only smoking outside, or dont care about your concern on the matter, but encourage them to take it outside during your listing period, be tactful and dont offend them by saying your house stinks....just be diligent in covering all the pitfalls and things that are going to slow you down in selling the property. If allowable try to at least have the seller air the home out prior to showings (when time/weather allow), or limit smoking to a garage or outside area, or at least not during or just before a showing.
I know agents for years have used scented candles and plug-ins to help control musty basements and the what not, but often great homes will sit on the market simply due to the smell of previous owners/tenants lack of consideration. Most may not think its a reason not to buy a home, but it may be enough to make them want to keep looking...and when they keep looking they just might find something else. Is it worth it to YOU to lose potential buyers due to a smell? I wouldn't think so. Take control and make something happen
Always Selling