Untreated common colds lead to permanent physiological damage
Available sources indicate that upper respiratory infections and acute respiratory infections can sometimes be associated with long-term or permanent impairments, such as post-viral loss of smell, but they do not establish that untreated common colds invariably lead to permanent physiological damage as a general rule.
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Simple English Wikipedia: Anosmia. https://simple.wikipedia.org/wiki/Anosmia
Anosmia Anosmia is losing the sense of smell. The word is also used for people who never had this sense. The loss can be temporary, or permanent. The conditions that cause a temporary loss of this sense include: - Upper respiratory tract infection, for example a common cold - Blocking the nose, for example through seasonal allergies, or a nasal polyp. - Side-effects of certain drugs or of certain poisons. - Concussion, brain tumors. Smelling things depends on two nerves (Nervus olfactorius and Nervus trigeminus), as well as the part of the brain which processes the information. Damage to this system will affect the sense of smell; permanent damage may lead to a permanent loss of the sense of smell. There are tests that can be done to find the cause of the problem. The sense of smell also affects the sense of taste. People who cannot smell have only the basic tastes: sweet, sour, bitter, salty, and umami. Note also that the sense of smell changes with age.[1] Anosmia can also point to different neurological conditions such as Parkinson's disease,[2] Alzheimer's disease,[3] or Schizophrenia.[4] Certain plants, such as tobacco also contain substances which change olfaction.
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Multiorgan sequelae following non-COVID-19 respiratory infections: a review | Infection | Springer Nature Link. https://link.springer.com/article/10.1007/s15010-025-02519-7
Multiorgan sequelae following non-COVID-19 respiratory infections: a review | Infection | Springer Nature Link # Multiorgan sequelae following non-COVID-19 respiratory infections: a review - Review - Open access - Published: 04 April 2025 - Volume 53, pages 1259–1272 (2025) - Cite this article You have full access to this open access article ## Abstract ### Background While numerous studies have documented severe and long-term health impacts of COVID-19 infections on various organs, the prolonged multisystemic implications of other acute respiratory infections (ARIs) are poorly understood. This review therefore analyzed currently available studies about these sequelae of ARIs excluding COVID-19. ### Main body Multiple pathogens causing ARIs are associated with significant long-lasting impairments across various organ systems. Cardiovascular events occur in 10–35% of patients following ARIs, with an elevated risk persisting for 10 years. The stroke incidence ratio increases significantly after ARIs up to 12.3. Pulmonary sequelae are common, including abnormal lung function in 54%, parenchymal opacification in 51%, lung fibrosis in 33–62%, asthma in 30%, and bronchiectasis i
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