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Longman Dictionary of Contemporary English
passive smoking
noun
EXAMPLES FROM CORPUS
▪ An analysis of the 1987 survey was undertaken to estimate the dose-response relations of height and respiratory symptoms to passive smoking.
▪ Cotinine in the urine is a reliable indicator that the subject has been exposed to passive smoking.
▪ Or it may have been through passive smoking.
▪ Specialist medical evidence in the case showed that he had developed lung cancer as a result of active and passive smoking.
▪ The authors conclude that the risk of respiratory conditions resulting from passive smoking, although small, is not negligible. 2.
▪ The tobacco industry requested that Stivoro be stopped from propagating its position on passive smoking.
▪ Their wickedness was emphasised by several large posters detailing the dangers of both active and passive smoking.
▪ This means that several hundred of the 40,000 deaths from lung cancer each year may be caused by passive smoking.
Wiktionary
passive smoking

n. The inhalation of tobacco smoke by a non-smoker due to proximity to smokers.

Wikipedia
Passive smoking

Passive smoking is the inhalation of smoke, called second-hand smoke (SHS), or environmental tobacco smoke (ETS), by persons other than the intended "active" smoker. It occurs when tobacco smoke permeates any environment, causing its inhalation by people within that environment. Exposure to second-hand tobacco smoke causes disease, disability, and death. The health risks of second-hand smoke are a matter of scientific consensus. These risks have been a major motivation for smoke-free laws in workplaces and indoor public places, including restaurants, bars and night clubs, as well as some open public spaces.

Concerns around second-hand smoke have played a central role in the debate over the harms and regulation of tobacco products. Since the early 1970s, the tobacco industry has viewed public concern over second-hand smoke as a serious threat to its business interests. Harm to bystanders was perceived as a motivator for stricter regulation of tobacco products. Despite the industry's awareness of the harms of second-hand smoke as early as the 1980s, the tobacco industry coordinated a scientific controversy with the aim of forestalling regulation of their products.

Usage examples of "passive smoking".

Three thousand people are getting lung cancer a year from passive smoking, they call it.

This had more to do with Deirdre' s recent discovery of the menace of passive smoking and banning of smoking in the house than he would care to admit to his neighbors.

This had more to do with Deirdre's recent discovery of the menace of passive smoking and banning of smoking in the house than he would care to admit to his neighbors.