2011). This hypothesis was tested by Pelchat et al. in 2011, which asked volunteers to donate both regular urine and asparagus urine, then presented volunteers with urine samples from all the volunteers to see whether or not they could detect odor in samples, not only of their own urine, but also that of others. GOOD. The results of this experiment revealed that six percent of volunteers were unable to detect the odor of asparagus in urine samples, strongly suggesting the existence of asparagus odor anosmia. However, these results do not prove anosmia because the urine samples used contained varying amounts of sulfur compounds, meaning that some samples could have contained large amounts of sulfur molecules while other samples could have. contain smaller quantities, which would make the task easier or more. difficult for different subjects to perceive the odor. Just like the experiment carried out by Lison et al. in 1980, this experiment just proved that at different concentrations, different people can smell the odor. He did not present clear data proving whether there really are “odors” and “non-odors »..”