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dusts or gases may be in the atmosphere increases the risk and
speed of toxic reactions. Smoking in the presence of many of the
halogenated hydrocarbons causes phosgene to be produced. Smoking
in the presence of the dust of "Fluon", a plastic (polytetrafluorethone),
is liable to cause symptoms similar to metal fume fever. Of
course, the Factories Act, 1961, and the regulations made under it,
forbid smoking in specified occupations.
These examples relate to very short-term effects in risk occupations.
However, persistent smoking in the ordinary way in our air
polluted cities over the years must present a very real additional risk
as far as bronchitis and cancer of lung are concerned.
REFERENCES
1 Schephr, G. W. H. (1961). Symposium on Medical Aspects of Air Pollution.
Meeting of the American College of Chest Physicians, June 24th, 1961, New
York City.
2 Mills, C. A. (1960). Amer. J. Med. SX. 239, 316.
3 Baldwin, R. W., Cunningham, G. J., Pratt, D., Studies on Carcinogenic
Action of Motor Engine Oil additives.