We have asbestos guttering on our house. Called a company to ask about removing it and they suggested a firm that would do the the whole job and call them to remove it when taken down. Company started work and have assured me that haven't broken any and have been careful how they have taken it down. But stupidly as I have been distracted with family crisis I didn't shut windows. What is the likely hood that fibres are in the house. It is white asbestos.