A mouth-to-lung or MTL vape means that you inhale the vapor into your mouth and breathe it to your lungs, and this pod mod system is popular with smokers trying o quit smoking cigarettes to vaping.
Here are some tips: Pick a Mouth To Lung vape: If vapour production is a cause for concern, it’s worth looking into getting a kit that creates a small amount of vapour with each inhale: an MTL ...