The respiratory system acts as a natural filter, with different regions capturing particles based on their aerodynamic properties: Upper Airways (Throat and Trachea): Capture particles larger than 5 micrometers First line of defense against larger contaminants Associated with irritation and inflammation responses Large Airways (Bronchi): Trap particles between 1-5 micrometers Can trigger bronchial responses and coughing Important for understanding chronic bronchitis development Small Airways and Alveoli: Receive particles smaller than 1 micrometer Critical for gas exchange function Most vulnerable to long-term damage from fine particles Research shows that the majority of cigarette and e-cigarette aerosol mass falls within the 0.4 to 1.3 micrometer range, meaning these particles can penetrate deep into the lungs where they may cause the most significant health impacts
Available from: Taylor GMJ, Treur JL
For many people, smoking is used as a way to manage unpleasant feelings like depression and anxiety, stress, and loneliness
Despite the speed of the machinery, this stage still takes time when factored against the full production volume
Knowing that thorough bag checks are to be expected during the World Cup, countries sending large numbers of fans should also ensure that travellers are properly informed before they depart, to avoid them going to watch a match and returning home with a hefty fine or worse
