The Arm and Hammer laudry detergent might have UV brighteners in it but I don't think regular Baking soda does. That's what I use to wash my clothes in.
As far as a scent meter, just ask a pregnant women to smell you. My wife had the sharpest nose when she was pregnant. If I opened a bottle of deer urine in the GARAGE, she could smell it in the bedroom. She even knew what the nieghbors were cooking for dinner across the road.