Add three or four drops of a citrus or conifer essential oil to a cotton pad and tuck it against the intake side of the return-air vent, not directly on the filter media itself, where oil can pool and gum up airflow
Smoking exerts direct toxicological effects on the cardiovascular system, contributing to conditions such as atherosclerosis and coronary artery disease, and is a leading cause of chronic obstructive pulmonary disease (COPD) [6, 7]
In 2025, the BBC reported that tobacco companies were illegally promoting heated tobacco products in supermarkets
Archived from the original on December 26, 2007
American Journal of Health Behavior, 2010
Results released this morning showed 3.3million Californians had voted 'Yes' (62.3 per cent), and 2million had voted 'No' (37.7 per cent)