I once worked an open house where literally every outlet had an air freshener plugged in....Don't kill the deal before you even get an offer!
The following is from Pillar to Post Home Inspections:
In more than one instance, the home inspector as well as the potential buyer walked into the home where the owner had plugged in several air fresheners, both the home inspector and the potential buyer had to leave the home as both were immediately impacted by headaches and sinus flare up. In one situation, a home owner had plugged in (14) of the air fresheners around the home, the potential buyer cancelled the contract before the home inspector could even get started as this situation cast a light on the home as to "what is going on here, what are they hiding"?
Many over the counter, synthetic air fresheners contain some very questionable chemicals, Phthalates, Parabens, Formaldehyde, Benzene and Petrochemicals. This could be a concern in many ways, one possible situation would be a potential buyer or buyer's family member that suffers from Asthma or other breathing issue might be at risk when entering the potential home.
During the home sale period, it might be best to shy away from commercial, synthetic type air fresheners and rely on more homemade or natural air fresheners like baking soda, vinegar or coffee just to name a few, see the link to the article that explores this and much more, click this LINK. (http://healthscamsexposed.com/…/the-great-air-freshener-sca…)
In closing, while many sellers and their agents mean well, having a home with a good aroma is always a plus during the sale process, it might be good to consider alternatives that have a much lower chance of causing issues with those that are sensitive, and if synthetic air fresheners are used, extreme moderation may be a good rule of thumb.