I’ve heard that using scented deodorants can be a problem on Yom Kippur. I would feel extremely uncomfortable without using deodorant. Would it be permissible to use my normal deodorant which does have a scent?
Please see this post: http://www.dinonline.org/2011/10/05/deodorant-on-yom-kippur-2/.
If you feel uncomfortable, it is permitted to use spray deodorant.
Sorry about the delay in replying.