One of the things I've read while investigating is that ghosts and demons can give off a smell. The different smells can be strong to one, or more people...They can also help us figure out what we're dealing with...For example, the female ghosts may smell like a strong flowery perfume...where the male ghosts would smell like cigar smoke...I've only experienced the female ghosts...but last night (around 2am), as I went to the staircase, I stopped in my tracks because I felt like a) somebody was standing behind me, and b) I could smell something that was unusual...It didn't smell like perfume, nor did it smell like cigars...It smelt like burning wood...I looked around and didn't notice anything on fire...Before you get to the steps, we have a table in the hallway with a lamp and telephone on it...Earlier that day, I had placed the bottle of holy water at the end of the table...Whatever it was, the smell came from the same area, and it didn't smell good...It smelt sweet, and yet alarming because it also smelt like something was burning...By the way, the smell didn't last long either...It was only in one spot...I went upstairs and checked it out, but the smell had stopped at the bottom. Very strange...