It is important to understand what e-cigarette and e-juice are made of. This can help you determine what to buy and what to deal with. Vegetable glycerin is the basis of such a product. Liquid e-juice does not impart flavor but enhances the product's ability to produce incredible steam.
Selling stripe flavors contain diethylene glycol which is safe to use. Too often it is mistaken for a similar-sounding product used to make antifreeze. Other ingredients vary depending on the taste of the product. Some of them contain nicotine and some don't.
If you have a preference in one way or another, then it's worth reading the product description carefully before buying. You may find that different e-cigarette juices create a certain mood and level of relaxation for you.
Some people find vanilla very calming. Therefore, use it when you are stressed or anxious. This can help prevent the urge to light a cigarette when things are busy or you have a challenge.
You may need to try different products before you can determine which one will give you the best relaxation experience. If you are looking for something that will lift your mood or help you feel filled, look for such a product and use it accordingly. You control what you use and how you use these products.