I also have had the fragrance of the Holy Spirit fill a section of my house at one time or another. I also was unnerved by it the first time, this week 4.9.12 I was sitting in my family room and a definite fragrance of roses was presented to me. It was undeniable and it lasted a few minutes. I called a christian friend and she said to pray asking if it was from the Holy Spirit to ask for it to return, and it did return. I enjoyed the pleasant fragrance and knew He was with me... To the people who have not had the experience, do not be unkind, it may happen to you one day and you will be frightened and amazed at the same time. I am a solid individual who has been a business owner for 19 years. I can not explain it but I have had this experience 4 times in my life.