Ha ha , there are some that actually believe in ghosts....and there are some that consume or smoke too much " stuff "...
Dont know about ghosts or smoking stuff .. But did have a few puzzling things did happen years back [ 30 yr ago ] ..
Living in an up staiars flat.. down stairs entry door locked and windows barred, two flights of timber steps, ones closest to the hallway of the flat creaked badly when stepped on.. Flat mate was away on an Army exercise, just me and my girl there .. 1am to 3am at least two or three times a week for several weeks at a time, you could hear someone walking on those stairs and make them creak and move .. even changed the locks while oldmate was away, still happened .. No other access to that area from below ...When I was away on exercise oldmate and his girl had it happen with them too ..
Even the lady living in the flat underneath us heard it and mentioned it ..
Used to happen about four times a year, We just got to the stage of saying " the ghosts back again " .. Funny thing is about ten years ago, Through coincidence I met a lady that had bought that flat [ she had just started at my work ] and she told me about the strange going ons with the stairs and being a bit freaked out by it .....