In a report on the modified method of venous olfactory test, it was concluded by experimental studies that more accurate latent time could be measured by having the subject make one nasal breath per second. It was also suggested that the latent time of patients with hyposmia was longer than those without any olfactory disturbance. However, in the venous olfactory test with nondiluted Alinamin (Thiamin propyl disulfide), There was no significant difference between slight hyposmia and normosmia.

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... his reason was presumed that in non-diluted Alinamin, the olfactory gas concentration was increased too rapidly. In the various concentrations of Alinamin, the latent time in the modified venous olfactory test was observed. The results were as follows : 1) With the intravenous injection of non dilu-ted Alinamin, there was no significant difference in the latent time between persons with slight hyposmia and with normosmia.