I've just bought a house. In this house is a big asbestos pipe leading from the toilet (the room, not the bowl) through the outside wall to the roof of the shed. The shed is attached to the house. It is an old ventilation shaft which is no longer in use because the last owner had an electrical ventilation installed. Paying some asbestos removing firm is bl**dy expensive, so I'd rather do it myself. So here's the point: Can I use my gasmask to avoid inhaling the asbestos fibre? Will that work?