Well I tried one of these last night.
Dividing it up roughly in thirds there was good, bad and ugly.
The first third had an odd cheap perfume aroma mixed with just mowed grass. Not very good at all.
The middle third changed a bit to hay and whiffs of graham cracker. Meh.
The final third was actually pretty good. The hay transitioned to leather and the cereal quality of the graham cracker morphed into coffee and hints of burnt sugar.
Over all not a horrible experience, but that first third and its weirdness I won't miss.