The rise of vaping has led to a growing concern about the potential health risks associated with second-hand vapor. While many assume that vape liquids are harmless, recent studies suggest otherwise. In this article, we’ll delve into the connection between vape liquids and second-hand vapor, exploring the risks and implications for public health.

What’s in Vape Liquids?

Vape liquids, also known as e-liquids or e-juices, are a mixture of propylene glycol (PG), vegetable glycerin (VG), flavorings, and nicotine. PG and VG are the primary solvents, while flavorings and nicotine are added for taste and effect. However, the composition of vape liquids can vary significantly depending on the manufacturer and type of product.

The Dangers of Second-Hand Vapor

Second-hand vapor is the aerosol exhaled by vapers, which can contain harmful chemicals like:

  • Volatile organic compounds (VOCs)
  • Heavy metals
  • Ultrafine particles
  • Carcinogens

These substances can cause respiratory problems, cardiovascular issues, and even cancer. Moreover, second-hand vapor can contain nicotine, which is highly addictive and harmful to the developing brains of youth and fetuses.

The Connection Between Vape Liquids and Second-Hand Vapor

Studies have shown that the chemicals present in vape liquids can be released into the air as second-hand vapor. For example:

  • A study published in the Journal of Chromatography found that e-liquids containing nicotine released significant amounts of VOCs and ultrafine particles when vaporized.
  • Another study in the Journal of Exposure Science and Environmental Epidemiology detected heavy metals like lead and chromium in second-hand vapor.

Implications for Public Health

The connection between vape liquids and second-hand vapor raises concerns about the safety of vaping in public places. While vaping is often seen as a safer alternative to smoking, the risks associated with second-hand vapor cannot be ignored. To mitigate these risks, some countries have implemented regulations, such as:

  • Banning vaping in public places
  • Implementing age restrictions on vape sales
  • Requiring warning labels on vape products


The connection between vape liquids and second-hand vapor is a pressing public health concern. While more research is needed to fully understand the risks, it’s clear that vape liquids can release harmful chemicals into the air as second-hand vapor. By acknowledging these risks and implementing regulations, we can work towards creating a safer and healthier environment for everyone. Central Vapors