Determination of chemical components of tobacco leaves The cured C3F tobacco leaf samples were dried at 45, crushed, and sieved through a 60-mesh sieve
It depends on the cause
Tobacco, whether smoked or chewed, contains nicotine - a potent stimulant that causes your blood vessels to constrict and your heart to beat faster
As with other allergies, symptoms may include: itchy nose or eyes watery eyes sneezing a runny nose a skin rash or hives wheezing tightness of the chest Doctors typically recommend allergy testing to help identify substances that provoke an allergic reaction
Available at: [Accessed 23 August 2018] [46] Stead M, Moodie C, Angus K, Bauld L, McNeill A, Thomas J, Hastings G, Hinds K, O'Mara-Eves A, Kwan I, Purves RI