What is the difference between hinoki and “Port Orford cedar” (Port Orford cypress, Oregon) for asthma?
I am not a specialist but the composition of the resin within the wood fibers of Port Orford Cedar and Hinoki is very different.
Actually one of the active aromatic components which has been isolated and is frequently used for viral protection and anti-allergic products is the hinokitiol.
hinokitiol is present in Taiwanese hinoki and in Japanese Asnaro wood.
It is included only in small percentages in japanese hinoki! and if I am not wrong, it is completely absent in american cedars.
Please find more info here:
If you are interested in the aromatic properties of this wood you might also consider ordering a bottle of oil and try if it works in your case.