Answer: True
Secondhand smoke is produced from the burning of the tobacco products such as cigars, cigarettes, bidis and pipes. This is smoke which is breathed out or exhaled by the smoking person. The smoke includes toxic gases. Smoking in the enclosed spaces such as homes, workplaces can be hazardous for the smoker as well as for the people present surrounding him or her. An appreciable amount of secondhand smoke in an enclosed space can cause ear infections, asthma attacks, respiratory attacks such as coughing, sneezing and labor breathing, respiratory infections such as pneumonia and bronchitis and a greater risk of sudden infant death is also associated with it.
On the basis of above description, the secondhand smoke is more dangerous in enclosed spaces is true.