Difference between OMI and French Inhale?
The open mouth inhale is, to me, vey much like the french inhale, and I really can't explain the difference, or at least what I think is the diffence, very well...but, to paraphrase a famous definition, I know it when I see it. Maybe its just a matter of the french inhale being ones only in which the smoking model draws/inhales the smoke back up into her nose. This is where being a nonsmoker really hurts me as a smoking fetish fan...but, its the best I can do.

