This product does wonders for ordors, and not sure if it has any perfume, but leaves a very mild clean like smell. (very good choice if others have been to strong or make you sick)
For a little more kick I use fabric shoftner sheets. There a few different brands out there, If you like how your laundry smells you'll love a lil' bit of that smell in the car. stick one or two under your seats in your glove, truck ect. I like to put them under my seats.
During the spring, summer and fall (when I sometimes like my windows opens) I sometimes use those tree air freshness found locally, I always put them on the right side on my drivers seat,(never hung on my rear view) and leave the plastic half way on and then after a week I remove it completly. I like Wild Cherry and Vanilla.
This is for my personal use, I'm not a perfessional detailer. But if I did detail someones car, I wouldn't go spraying anything, If there is any unpleasant smell, maybe just a few squirts of the Meguiar's stuff as needed. Nothing that smacks you in the Face when you get in. Hope this helps