“Nonsmoking” rooms In hotels that allow smoking elsewhere had up to nearly 5 times the tobacco-related air pollutants as accommodations in smoke-free hotels, according to a study of 40 hotels led by Georg E. Matt of San Diego State University. In some cases, traces of nicotine in nonsmokers’ urine was more than twice as high for those who had stayed in nonsmoking rooms, as opposed to smoke-free hotels, The New York Times says in a report in the study.

Source: Smoke Permeates Nonsmoking Hotel Rooms