Professional use of hypochlorite (bleach) has been associated with respiratory symptoms. Bleach is capable of inactivating allergens, and there are indications that its domestic use may reduce the risk of allergies in children. This study looks at the associations between household use of bleach and atopic sensitisation, allergic diseases, and respiratory health status in adults. J Allergy Clin Immunol. 2009;124(4):731-8.e1. Epub 2009 Aug 8.