Scent? I HOPE that means whatever the stuff it is made of smells like, not some added fragrance so people think it smells "nice". I wouldn't want my chicks inhaling those chemicals. There are far too many noxious chemicals used to make so many products "smell nice" today.
Yes but! My 7 June 2015 chicks, broody raised, didn't roost at night until they were about a month old and they started on the 4' high roosts with the then 3 Y/O hens (except their surrogate mom who stayed in the nest box until only 2 were left) even though there is a parallel roost at 2' off the floor. But during the day they were more than happy to hang out on something that was in the barn. I don't even know what it is supposed to be used for but it has 5 parallel 'pipes' about 1" in diameter welded into side pieces that can be screwed to the wall and hold the pipes out about 3-4". I had it leaning against the wall and the chicks just decided they wanted to perch on it. Not that they ever used the little set of wood "bleachers" I made for the brooder area in the coop.
I would close off the nest boxes, force them to make the decision to sleep elsewhere. Of course, they may just choose the floor. Another possibility is that the older girls won't let them come up on the roosts. I don't know why mine never used the 2' high roost, maybe because all the other birds were up high??
It's just the smell of pine wood. It's not added scent. Chickens can be so funny! I have never had chickens take this long to learn to roost. I will keep working with them till they learn. I hope that the three week olds learn to roost young so I don't have 34 that I have to put on the roost at night.