18.Even people who do not have lung problems can find strong scents irritating.
(A) Polls find that about 30 percent of people are bothered by fragrances, especially strongperfumes.
(B) Heavy perfume smells often trigger bad reactions such as headaches, itchy eyes, anddizziness.
(C) If you give people an ambiguous scent and tell them it is something pleasant, most willrespond positively.
(D) About one to five percent of the population is very sensitive, suffering chemicalsensitivities when exposed to scents.