I moved into a house that has a light fitting that has been made out of an old food 'tin' can.
The light hadn't worked since moving in. On trying to remove it the glass of the bulb pulled straight out into my hand. There is a white powder on the bulb and also the wire towards the bulb.
It also looks in a structure like mould or mildew, as the 'white' is also up the wire and on the beam that the light lead is hanging from.
What is the powder? Is it dangerous, as in corrosive to other materials as it fell onto the floor and myself? Or is it possible that it is more a mould?