Much discussion on Reddit a couple of weeks ago when this study was originally published: https://www.reddit.com/search?q=cleaning+products+lung
>'Based on the entrance questions (wording at http://www.ecrhs.org ), participants were categorised as “not cleaning”, “cleaning at home” and “occupational cleaning”. Participants responding “yes” to at least one module entrance question, answered a questionnaire concerning use of cleaning agents (sprays, other cleaning agents); defining the exposure categories “not cleaning”, “≥1 cleaning spray ≥1/week”, and “≥1 other cleaning product ≥1/week”.'
http://www.thoracic.org/about/newsroom/press-releases/resour...