Hi Lizziegirl - welcome to SpiritKeep! =)
If you look in the Ghosts & Spirits Forum (at the top), there is a thread about blessings/smudging. If you smudge, I'd suggest first with sage, then with cedar.
If you have more questions on it, please post them in the Ghosts & Spirits forum and we'll help as best we can!
Kell