Particle Size and Range

[adifrank]

I hope I'm asking this question in the right forum. If not, please redirect me.

 

Anyway, my question is: when we smell aromatic cedar, what is the size range in microns of the particle(s) that are actually physiologically interacting with our systems?

 

.... Don't ask why I need to know.

 

Thanks for your help!!

[DV8 2XL]

The active component of cedar's odor is an aromatic essential oil called lignen, I believe - a medium sized molecule

[insane_alien]

so probably a few nanometers across say 2. thats 0.002 microns