Quackery & Asthma

According to Stephen Barrett, M.D., founder of Quackwatch, quackery can best be defined as "the promotion of unsubstantiated methods that lack a scientifically plausible rationale. Promotion usually involves a profit motive. Unsubstantiated means either unproven or disproven. Implausible means that it either clashes with well-established facts or makes so little sense that it is not worth testing."

You probably receive all sorts of information about asthma that touts amazing results. Too often these claims are unsubstantiated.

What sorts of quackery have you seen in relation to asthma?