This site's footer states this specific disclosure directly: not intended to diagnose, treat, cure or prevent any disease — including asthma, COPD or any other respiratory condition.
Worth reading this as more specific than a general "not a treatment for any disease" line — naming two common, specific respiratory conditions makes the boundary concrete rather than abstract.
This site's own "not for you" list separately names "have a diagnosed lung condition (asthma, COPD, etc) — discuss first" — worth reading both statements together as this site's consistent, repeated boundary.
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