Abstract
Nebulization of the upper airway tract has few side effects so it is a desirabe therapy. However occasionally, aerosol particles can be deposited in the lower respiratory tract. Aerosol particles have a higher possibility of causing lesions in the lower respiratory tract than in the upper respiratory tract. In our daily life, we have many opportunities to use various spray products. Care should be taken with the use of these sprays because aerosol particles contained in some of these products have high possibilities of causing lesions in the lower respiratory tract. Water-proof sprays have caused fatal accidents, in which it was supposed that interstitial pneumonia and pulmonary edema resulted from the inhalation of toxic fluorocarbon resin. Moreover, poisoning from hair spray, static electricity-proof spary and insecticide spray have also been reported.
