Scented candles and diffusers: a hidden health threat

What are the dangers of scented candles and diffusers?

Scientific research has shown that common scented candles and diffusers may not be as harmless as they appear. When heated, fragrant waxes release terpenes — compounds that react with ozone. This results in the formation of nanoparticles, which can enter the bloodstream and negatively affect health.

An effect comparable to diesel exhaust

In terms of air pollution levels, scented candles and diffusers are comparable to exhaust fumes from diesel vehicles. Inhaling micro-particles can cause respiratory tract irritation, impaired cognitive function, and negative effects on the cardiovascular system. Children, the elderly, and people with chronic lung diseases are particularly vulnerable to this exposure.

How to minimise the harm?

Experts recommend:
✔ Choosing natural candles — made from beeswax or soy-based compositions, without synthetic fragrances.
✔ Ventilating the room regularly, especially after using scented products.
✔ Limiting the use of diffusers, particularly in small and poorly ventilated rooms.

Research is ongoing, but scientists are already warning: what seems like a pleasant aroma may have hidden health consequences.