Walk into a new model home in a subdivision.  THAT smell is what you want to replicate.  The only way to get there is deep cleaning of the entire house, possibly remove old carpet, and new interior paint.

I'm a 'nature' person so, I love the fresh air smell of the outdoors in the home.

Opening windows & doors and letting the fresh air in while a seller is turning on lights and tidying up works wonders!

Annette, I grew up in Southern California in the sixties and seventies before urban sprawl and orange groves were everywhere. I think in Florida you might relate to this. The smell of orange blossoms in April was simply intoxicating. Now to your question. I think that too many diverse opinions would necessitate the lightest and most neutral of smells.

Freshly mowed grass

For me, clean fresh cool air!  Reminds me of the ocean - sea breeze.  

Super clean and fresh smell works for me.

I like the freshness of lemon but it brings no memory to mind.

I just had a slight 'fight' with a seller that declared that funky coconut was a neutral scent even though I told her to buy linen fresh/clean cotton. Every time I left, she'd fire up that candle! Yikes .... smelled like a bad Hawaii in there. 

Alfalfa reminds me of horses when I was a kid. Not much of that hanging around I'm afraid.

I personally don’t want to smell anything but clean clean clean. I do agree with Fred Griffin new smells good too 

I think that Fred Griffin made an excellent point.  A

No smell is good.

The smell of clean is best.

Cinnamon seems to be a universally loved smell.

A dash of cinnamon in a warm oven can work wonders for the indoor receptors and some freshly mown grass takes care of the outside.

The aroma of being very clean is the best.

I'm with Fred Griffin on this - deep cleaning is always best

Baking bread is better than cookies, in my opinion. Especially bread made only once a year for holidays which has special spices that fill the home.

I prefer to not geegaw up a house with smells or noise (music). When I sell my own houses, I burn a vanilla candle about 30 minutes before people arrive and I always had comments about how lovely the home smelled. I did some research long ago and learned the vanilla is the least disliked scent universally. But more often than not, when a home has a smell, I find buyers get suspicious about what odors the sellers are trying to mask.

Often no trace of a scent can translate to more than cents for a homeowner/ seller.

Who doesn't remember the smell of Grama's house? It always made me feel welcome.

Of course, I didn't buy or wouldn't buy Grama's house. If I went to a for sale house and it smelled like Grama's house I would probably leave.

Was never a fan of that, but maybe fresh baked bread.

Curry spice. Pets pee. Nicotine. They stay almost forever even after a flooring or cabinet replacement.

Supposedly for many a citrus smell is very appealing but cautioned not to over do it and don't over burden the house with multiple aromas.

Good Point,  I do bake cookies at open houses.

The smell of CLEAN!

Some are reasonable but many are offensive

Fresh air is the best, especially near the ocean!!

The problem is, some aromas may be attractive to some while being a turnoff to others.

Depends what it smells like...

I agree with Fred

Annette Lawrence , Palm Harbor, FL 727-420-4041 - and I highly recommend the sellers from Asian subcontinent to do something abouth the cooking smell.

Yes, Wanda, smell of ozone after the rain. 

And freshly mowed grass, Richard. 

Baby powder and baked bread are some of my favorites but my very favorite is the smell of clean.

A scent of vanilla and cinammon will also Do it!

Anything but potpourri. It normally means to me that something is being covered up.

My husband loves the smell of a new car...

The five senses are not talked about enough. Each one extra-ordinary

The fresh, clean smell after a good rain and the smell of clean whites after being laundered. Ahhhhh!