The Risks Of Asbestos Exposure Asbestos is not dangerous unless the microscopic fibres become airborne. Those who are at highest risk include people working with asbestos, smokers, and those with pre-existing lung diseases. Secondhand exposure can occur when employees bring home asbestos-containing particles on their clothing, shoes and hair, or http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1949187