Nose-related causes include: common colds allergies sinus infections irritation from smoking or poor air quality nasal polyps Other common causes of phantosmia include: upper respiratory infections dental problems migraines exposure to neurotoxins (substances that are toxic to the nervous system, such as lead or mercury) radiation treatment for throat or brain cancer There are many less common causes of phantosmia
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FDA wasnt happy about the decision and is worried that regulating such products implies that they are safe
"Occasionally some of the most severe cases make the headlines," said Donal O'Shea, a professor of chemistry at the RCSI University of Medicine and Health Sciences in Ireland
[29] See also ASH Key Topic: The economic impact of smoking ASH Ready Reckoner British tobacco companies Two of the largest tobacco companies in the world are headquartered in the UK