eCig: holding vapor in mouth?

[k]

I read that when doing eCig the vapor needs to be held in mouth for about 4-5 second before either inhaling into lungs or exhaling out. But that i think is for nicotine eLiquid, should i do this when using eCig for DMT? Or hold both in lungs and mouth together? Or only in lungs?

Edit:
I googled "how to properly use ecig", opened two webpages from there and both of them saying to hold in mouth:

http://www.metroecigs.com/content/how-do-you-inhale-an-electronic-cigarette.asp

Smoke an E Cigarette: A Simple Guide to Vaping

A beginner's guide to smoothly vaping an e cigarette This article is for adults only. No one under 18 should be vaping as it is harmful to the developing brain. E-cigarettes, also known as e-pens, e-pipes, and e-cigars, are vaporizers that...

www.wikihow.com

 

[syberdelic]

Straight into the lungs. Holding it in the mouth does next to nothing for absorption of spice into your blood stream.

 

[ManicMongrel]

Inhale deeply. Also when making the e-liquid, it's best to use pure propylene glycol for dissolving dmt. Propylene glycol will absorb faster in your lungs than glycerin.