Alternative: Open windows regularly, use houseplants, or apply natural essential oils sparingly.
5. Dry-cleaned clothing

A common solvent used in dry cleaning, perchloroethylene, is classified as a probable carcinogen. It can be absorbed through the skin or inhaled, potentially affecting the liver, kidneys, and nervous system. Long-term exposure has been linked to Parkinson’s disease.
Tip: Remove plastic covers immediately and air clothes outdoors or in well-ventilated spaces.
4. Poorly cleaned humidifiers
Without regular cleaning, humidifiers can harbor bacteria and mold, including harmful species that are released directly into the air and inhaled.
Prevention: Change water daily and clean the unit every few days using vinegar or a mild disinfectant.
3. Scented paraffin candles
Burning paraffin releases compounds such as benzene and formaldehyde, which contribute to arterial inflammation and plaque formation in