Studies on the Olfactory Response of Human Being

II. On the Smell-Blindness

Abstract

During the study on the olfactory response of human being, the author found the cases of so-called smell-blindness, and classified them in three categolies.
The first one was smell-blindness via nostril. They did not react agains skatole, acetone, and Alinamin (thiamine propyldisulfite) via nostril, and the number was 16 out of 500 (3.2%).
The second one was smell-blindness via blood vessels. In this case, they did not react against Alinamin which was administrated through blood vessels, but react in some extent against three reagents mentioned above via nostril. The number was 12 out of 500 (2.4%).
The third one was so-called complete smell-blindness. They did notreact against reagents both via nostril and blood vessels. The number was 6 out of 500 (1.2%).
Owing to the small numbers of cases, the author could not find any decisive rule of heredity about smell-blindness