after last cigarette timeline Brain Post: What Happens When a Smoker Quits? | A 15-Year quit_smoking_infographic

That means (that if you take bigger drags more often and seal off the holes) that if you take bigger drags more often and seal off the holes (you consume more harmful components than when you don't do so.) you consume more harmful components than when you don't do so

The Cochrane Review clearly identifies these interventions

Buy Special Blend Menthol (50VG/50PG) Now Special Blend Menthol (70VG/30PG): Tailored for sub-ohm vaping, this variant provides a smoother experience with denser vapor production

However, there has been more of an understanding of the difference between smoke and vapour produced by an e-cigarette, and some are more relaxed with allowing the use of them indoors

The menthol does its thing clean, cool, not aggressive

The fact that PG is thinner than VG also means that higher-PG e-liquids tend to work best in smaller vaping devices such as pod systems