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Chemicals That Should Not Be in Vaping Oil

Any vape e-liquid is a combination of multiple compounds, this is especially true to cbd e-liquids. It is wrong to say that vaping is harmful. There are some chemicals that should not be in vaping. Some compounds are known to be bad for the lungs and health. If toxic substances are not present in the pens with vaping oil, it is pretty safe.

Just take an example of E-cigarette or Vaping Use-Associated Lung Injury (EVALI). There has been a sharp decline in its cases since 2019. Wondered why? Well, simple, because now science realizes that some of the chemicals should not be in vaping oil. This article will tell more about what those chemicals are.

Vitamin E-Acetate

Vaping is much safer than tobacco smoking. Moreover, nowadays, it rarely causes EVALI or severe lung injury. This is because researchers have identified the main culprit behind the EVALI outbreak. This is even visible from the UK statistics, where rarely any severe lung injury cases are reported due to vaping.

Vitamin E is a safe and essential nutrient when ingested orally. Therefore, guessing that vaping vitamin E acetate may harm the lungs was difficult. Early vapes contained vitamin E-acetate, and this caused the EVALI outbreak in the US.[1,2]

As science knows, this substance is very harmful to the lungs when inhaled. None of the legally produced vapes contain vitamin E acetate.


Acrolein is never added to vape oil intentionally. However, some poorly produced and untested products may have it. This is a kind of herbicide which may be present in small amounts in some vaping oils of poor quality. If inhaled, it increases the risk of lung disease, COPD, and asthma.[3]

Vaping oils or e-juices contain natural extracts. However, it is worth understanding that using herbicides in agriculture is not rare. Thus, some of those who grow nicotine, cannabis, and other foods use herbicides containing this chemical.

Since science knows that this chemical is harmful to the lungs, most high-quality vapes ensure that their products are free of this chemical. They also try to make sure that they source CBD extracted from organic hemp, as this will help rule out the risk of the presence of this chemical, even in minute amounts.


The food industry widely uses this chemical. It is yet another example of what is safe for oral consumption and is not essentially safe when inhaled. This chemical is added to baked products, coffee, and even microwave popcorn. It is an excellent flavour enhancer.[4]

However, it appears that it is not safe to inhale. It is behind the rare disease called “popcorn lungs.” It causes severe disease of smaller bronchi.[5] Therefore, this flavouring agent should never be present in vaping oil.

Heavy Metals & Contaminants

These are not something that is intentionally added to any vape oil. However, any high-quality vaping oil should be free of heavy metals and contaminants.

That is why people should always buy well-known and high-quality brands only. The thing is that cheaper vaping oils or disposable vape pens are more likely to contain contaminants. Remember that the cost of vaping oil depends on its purity. Therefore, never go for the cheapest options.

Of course, cost is just one way to ensure you get vaping oil free from toxins. Another thing to look for is lab testing. Labs not only test for the quality of active ingredients. They pay particular attention to contaminants and impurities.

What Else to Know?

There are a few other things to know. Remember that two oils present in vapes are propylene glycol (PG) and vegetable glycerine (VG). Though these oils are safe to vape, they must be heated at the right temperature. If the coil temperature is too high, it may burn these oils instead of producing vapour, which may be bad for the lungs. This again highlights the importance of choosing high-quality and well-tested vape pods and disposable vape pens.

It means that the quality or safety of vapes depends on vaping oils or e-juices and the quality of vaping pods, particularly on filament quality and heating temperature settings.

Although nicotine does not cause lung injury directly, one should also avoid inhaling too much, Even might be wondering about  CBD Vape Dosage Chart To prevent inhaling it at higher dosages. Nicotine is particularly bad for vascular health.

Similarly, do not buy illegally sold high-THC products. Remember that there is a reason why government agencies have set the limit on THC content. At higher dosages, it may provide a high and is harmful to health. Moreover, illegally produced products are more likely to contain chemicals that shouldn’t be in vaping oil.

The Bottom Line

Vaping and Vaping CBD is highly safe. However, to enjoy it safely, one needs to understand what should be and should not be there in vaping oil and  CBD vs THC . Some of the chemicals are now proven to be harmful to the lungs, like vitamin E acetate, pesticides, and certain flavouring agents. Hence, our final advice is to always go for high-quality, well-tested products and choose vaping oils with fewer ingredients.


  1. Association AL. E-cigarette or Vaping Use-Associated Lung Injury (EVALI) [Internet]. [cited 2023 Oct 11]. Available from:
  2. MD RHS. Can vaping damage your lungs? What we do (and don’t) know [Internet]. Harvard Health. 2019 [cited 2023 Oct 13]. Available from:
  3. Bein K, Leikauf GD. Acrolein - a pulmonary hazard. Mol Nutr Food Res. 2011;55:1342–1360.
  4. Flavoring-related Lung Disease | NIOSH | CDC [Internet]. 2023 [cited 2023 Oct 13]. Available from:
  5. Allen JG, Flanigan SS, LeBlanc M, et al. Flavoring Chemicals in E-Cigarettes: Diacetyl, 2,3-Pentanedione, and Acetoin in a Sample of 51 Products, Including Fruit-, Candy-, and Cocktail-Flavored E-Cigarettes. Environ Health Perspect. 2016;124:733–739.
Dr Preet Pal Singh Bhinder

This article was authored by: Dr. Preet Pal Singh Bhinder.

This article was peer-reviewed by Dr M Mansoor Siddique (PhD). Dr Siddique has over eight years of experience working with CBD and CBD products.

Disclaimer: All of our products are not intended to diagnose, treat or cure any disease. It is recommended to check with doctor before starting a new dietary supplement program. All CBD products sold have less than 0.2% THC content and abide by both EU an UK law.



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