I live in a flat....there are 4 in the block. Two on my floor including me and two on the bottom. There's a shared hallway with private gardens front and back.
Nobody in the building smokes...nobody has visitors who smokes and yet...we all keep smelling smoke in the communal hallway.
One neighbour accused me of smoking there...as the newest tenant she felt it was me...it wasn't.
I've been smelling it for the same period of time...about 1 month or so. It's lingering in the air...nobody can get into the building at all...we're all very conscious about locking doors and there's security lights.
There's no other buildings or areas where someone's smoking nearby...no alleyways or anything...the street is too far from the door for a passer by's smoke to come in...it's quite a strong smell.
What is it?