By far, the most relevant to life safety finding derived from this research is the affirmation of Badia's, et al., observation that few people are actually awakened from a state of sleep by an odor stimulus. In this study, 2 of the 10 subjects (20 percent) awoke to the conditions of water, smoke, or citrus odors. In Badia's, et al., research, 3 of the 10 subjects (30 percent) awoke to the repeated conditions of air or peppermint odors. Statistically, these figures represent a significant difference among the test conditions. Very few of either study's sleeping subjects responded to any of the conditions mentioned by actually waking up. The implications of these findings are astonishing. The fire protection afforded by residential smoke detectors is the only prudent manner to protect oneself from the threat of fires occurring during sleep.