Just as Jim said, a little vanila extract works well. Back in the early 80's I experimented with all kinds of scents. In your local super market you can find dozens of extract flavors ... not just vanila. The idea hit me when I was painting a difficult client's kitchen. She said she wanted the walls to be "ALMOND".
I picked up a gallon of BenMor AquaGlo - color -
ALMOND. She said it wasn't "almondy" enough. I took it back to the store, and staired at the can with the kid behind the counter. He shot a little tint into it, shook it, wrote all over the can with a magic marker "ALMOND" - "ALMOND" - ALMOND". I went to the store and grabbed a bottle of Almond Extract, and poured it in, shook it up, and put some on the wall. She said it was perfect ... and even smelled a little like almond.
After that, I experimented with pine, fruits, and even combo's like pina colada. Be carefull not to put too much in ... my pina colada bathroom smelled for months.
GURU